JP2009137851A - 2-trifluoromethylpyrimidin-6(1h)-one derivative, method for producing the same, and herbicide comprising the derivative as active ingredient - Google Patents

2-trifluoromethylpyrimidin-6(1h)-one derivative, method for producing the same, and herbicide comprising the derivative as active ingredient Download PDF

Info

Publication number
JP2009137851A
JP2009137851A JP2007313525A JP2007313525A JP2009137851A JP 2009137851 A JP2009137851 A JP 2009137851A JP 2007313525 A JP2007313525 A JP 2007313525A JP 2007313525 A JP2007313525 A JP 2007313525A JP 2009137851 A JP2009137851 A JP 2009137851A
Authority
JP
Japan
Prior art keywords
group
trifluoromethylpyrimidin
methyl
oxo
trifluoromethyl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2007313525A
Other languages
Japanese (ja)
Inventor
Ryuta Ono
竜太 大野
Maho Kono
真帆 河野
Mitsuyasu Okamura
充康 岡村
Satoshi Kondo
智 近藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hokko Chemical Industry Co Ltd
Sagami Chemical Research Institute
Tosoh Corp
Original Assignee
Hokko Chemical Industry Co Ltd
Sagami Chemical Research Institute
Tosoh Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hokko Chemical Industry Co Ltd, Sagami Chemical Research Institute, Tosoh Corp filed Critical Hokko Chemical Industry Co Ltd
Priority to JP2007313525A priority Critical patent/JP2009137851A/en
Publication of JP2009137851A publication Critical patent/JP2009137851A/en
Pending legal-status Critical Current

Links

Abstract

<P>PROBLEM TO BE SOLVED: To provide a herbicide having extremely excellent control effects on noxious weeds in an agricultural and horticultural cultivation scene or a non-crop land. <P>SOLUTION: The herbicide includes a 2-trifluoromethylpyrimidin-6(1H)-one derivative represented by general formula (1) (wherein, R<SP>1</SP>represents a 1-6C fluoroalkyl group; R<SP>2</SP>represents a hydrogen atom or a 1-6C alkyl group; R<SP>3</SP>represents a hydrogen atom or a 1-6C alkyl group which may be substituted; R<SP>4</SP>represents a hydrogen atom, a 1-6C alkyl group which may be substituted, a 3-6C alkenyl group which may be substituted, a 3-6C alkynyl group which may be substituted, or a 7-11C aralkyl group which may be substituted; X represents a hydrogen atom or a halogen atom; and W represents an oxygen atom or a sulfur atom) as an active ingredient. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、2−トリフルオロメチルピリミジン−6(1H)−オン誘導体及びその製造方法並びに該誘導体を有効成分として含有する除草剤に関する。   The present invention relates to a 2-trifluoromethylpyrimidin-6 (1H) -one derivative, a method for producing the derivative, and a herbicide containing the derivative as an active ingredient.

従来、除草活性や殺虫、殺菌活性などの農薬としての生理活性を有するピリミジン誘導体は数多く知られている。ピリミジン−4−オン誘導体を示す除草活性化合物は特開平9−301957号公報(特許文献1)に記載されているが、ピリミジン環4位の置換基は炭素数1〜3のアルキル基に限定されている。   Conventionally, many pyrimidine derivatives having physiological activities as agricultural chemicals such as herbicidal activity, insecticidal activity, and bactericidal activity are known. Although herbicidal active compounds showing pyrimidin-4-one derivatives are described in JP-A-9-301957 (Patent Document 1), the substituent at the 4-position of the pyrimidine ring is limited to alkyl groups having 1 to 3 carbon atoms. ing.

しかしながら、該特許文献1には、ピリミジン環4位に炭素数1〜6のフルオロアルキル基が置換した化合物及びその製造方法、並びに該化合物の除草活性に関する記載はない。
特開平9−301957号公報
However, Patent Document 1 does not describe a compound in which a fluoroalkyl group having 1 to 6 carbon atoms is substituted at the 4-position of the pyrimidine ring, a production method thereof, and herbicidal activity of the compound.
JP-A-9-301957

本発明は、農園芸栽培場面あるいは非農耕地における有害な雑草に対して極めて優れた除草活性と作物に対する安全性とを兼ね備えた新規なピリミジン誘導体及びその製造方法、更には該誘導体を有効成分として含有する除草剤を提供することを目的としている。   The present invention relates to a novel pyrimidine derivative having a very excellent herbicidal activity against harmful weeds in agricultural or horticultural scenes or non-agricultural land and a safety for crops, and a method for producing the same, and further using the derivative as an active ingredient It aims at providing the herbicide to contain.

本発明者は、上記課題を解決すべく鋭意検討を重ねた結果、本発明の下記一般式(1)で示される新規な2−トリフルオロメチルピリミジン−6(1H)−オン誘導体が、低施用量で優れた除草活性を示し、更には薬害が低減され、作物安全性が高いことも見出し、本発明を完成するに至った。   As a result of intensive studies to solve the above problems, the present inventor has found that a novel 2-trifluoromethylpyrimidin-6 (1H) -one derivative represented by the following general formula (1) of the present invention An excellent herbicidal activity was exhibited at the dose, and further, it was found that phytotoxicity was reduced and crop safety was high, and the present invention was completed.

すなわち、本発明は、一般式(1)で示される2−トリフルオロメチルピリミジン−6(1H)−オン誘導体に関する。   That is, the present invention relates to a 2-trifluoromethylpyrimidin-6 (1H) -one derivative represented by the general formula (1).

Figure 2009137851
Figure 2009137851

式(1)中、R1は炭素数1〜6のフルオロアルキル基を表し、R2は炭素数1〜6のアルキル基を表し、R3は水素原子又は置換されていてもよい炭素数1〜6のアルキル基を表
し、R4は水素原子、置換されていてもよい炭素数1〜6のアルキル基、置換されていて
もよい炭素数3〜6のアルケニル基、置換されていてもよい炭素数3〜6のアルキニル基又は置換されていてもよい炭素数7〜11のアラルキル基を表し、Xは水素原子又はハロゲン原子を表し、Wは酸素原子又は硫黄原子を表す。
In formula (1), R 1 represents a fluoroalkyl group having 1 to 6 carbon atoms, R 2 represents an alkyl group having 1 to 6 carbon atoms, and R 3 represents a hydrogen atom or an optionally substituted carbon atom. R 4 represents a hydrogen atom, an optionally substituted alkyl group having 1 to 6 carbon atoms, an optionally substituted alkenyl group having 3 to 6 carbon atoms, or optionally substituted. An alkynyl group having 3 to 6 carbon atoms or an optionally substituted aralkyl group having 7 to 11 carbon atoms is represented, X represents a hydrogen atom or a halogen atom, and W represents an oxygen atom or a sulfur atom.

また、本発明は、一般式(1b)で示される5−(4−ハロ−3−ニトロフェニル)−2−トリフルオロメチルピリミジン−6(1H)−オン誘導体と一般式(5)で示される
グリコール酸類又はチオグリコール酸類とを塩基存在下にて反応させ、一般式(2)で示される2−トリフルオロメチルピリミジン−6(1H)−オン誘導体の製造方法に関する。
In addition, the present invention is represented by a 5- (4-halo-3-nitrophenyl) -2-trifluoromethylpyrimidin-6 (1H) -one derivative represented by the general formula (1b) and the general formula (5). The present invention relates to a method for producing a 2-trifluoromethylpyrimidin-6 (1H) -one derivative represented by the general formula (2) by reacting glycolic acid or thioglycolic acid in the presence of a base.

Figure 2009137851
Figure 2009137851

式(1b)中、R1、R2、及びXは前記と同じ意味を表す。Ybはハロゲン原子を表す。 In formula (1b), R 1 , R 2 , and X represent the same meaning as described above. Y b represents a halogen atom.

Figure 2009137851
Figure 2009137851

式(5)中、R3及びWは前記と同じ意味を表す。R5は炭素数1〜6のアルキル基を表す。 In Formula (5), R 3 and W represent the same meaning as described above. R 5 represents an alkyl group having 1 to 6 carbon atoms.

Figure 2009137851
Figure 2009137851

式(2)中、R1、R2、R3、R5、X及びWは前記と同じ意味を表す。
また、本発明は、一般式(2)で示される2−トリフルオロメチルピリミジン−6(1H)−オン誘導体のニトロ基を還元し分子内アミド化反応を行うことを特徴とする、一般式(1a)で示される2−トリフルオロメチルピリミジン−6(1H)−オン誘導体の製造方法に関する。
In the formula (2), R 1 , R 2 , R 3 , R 5 , X and W represent the same meaning as described above.
In addition, the present invention is characterized by performing an intramolecular amidation reaction by reducing the nitro group of the 2-trifluoromethylpyrimidin-6 (1H) -one derivative represented by the general formula (2). The present invention relates to a method for producing a 2-trifluoromethylpyrimidin-6 (1H) -one derivative represented by 1a).

Figure 2009137851
Figure 2009137851

式(2)中、R1、R2、R3、R5、X及びWは前記と同じ意味を表す。 In the formula (2), R 1 , R 2 , R 3 , R 5 , X and W represent the same meaning as described above.

Figure 2009137851
Figure 2009137851

式(1a)中、R1、R2、R3、X及びWは前記と同じ意味を表す。
また、本発明は、一般式(1a)で示される2−トリフルオロメチルピリミジン−6(1H)−オン誘導体と、一般式(3)で示される化合物とを塩基の存在下に反応させることを特徴とする、一般式(1c)で示される2−トリフルオロメチルピリミジン−6(1H)−オン誘導体の製造方法に関する。
In the formula (1a), R 1 , R 2 , R 3 , X and W represent the same meaning as described above.
The present invention also includes reacting a 2-trifluoromethylpyrimidin-6 (1H) -one derivative represented by the general formula (1a) with a compound represented by the general formula (3) in the presence of a base. The present invention relates to a method for producing a 2-trifluoromethylpyrimidin-6 (1H) -one derivative represented by the general formula (1c).

Figure 2009137851
Figure 2009137851

式(1a)中、R1、R2、R3、X及びWは前記と同じ意味を表す。 In the formula (1a), R 1 , R 2 , R 3 , X and W represent the same meaning as described above.

Figure 2009137851
Figure 2009137851

式(3)中、R4bは置換されていてもよい炭素数1〜6のアルキル基、置換されていてもよい炭素数3〜6のアルケニル基、置換されていてもよい炭素数3〜6のアルキニル基、置換されていてもよい炭素数7〜11のアラルキル基を表し、Lは脱離基を表す。 In formula (3), R 4b is an optionally substituted alkyl group having 1 to 6 carbon atoms, an optionally substituted alkenyl group having 3 to 6 carbon atoms, and an optionally substituted carbon atom having 3 to 6 carbon atoms. Represents an alkynyl group of 7 to 11 carbon atoms which may be substituted, and L represents a leaving group.

Figure 2009137851
Figure 2009137851

式(1c)中、R1、R2、R3、R4b、X及びWは前記と同じ意味を表す。
また、本発明は、一般式(1)で示される2−トリフルオロメチルピリミジン−6(1H)−オン誘導体を有効成分とする除草剤に関する。
In the formula (1c), R 1 , R 2 , R 3 , R 4b , X and W represent the same meaning as described above.
The present invention also relates to a herbicide containing as an active ingredient a 2-trifluoromethylpyrimidin-6 (1H) -one derivative represented by the general formula (1).

Figure 2009137851
Figure 2009137851

式(1)中、R1、R2、R3、R4、X及びWは前記と同じ意味を表す。 In formula (1), R 1 , R 2 , R 3 , R 4 , X and W represent the same meaning as described above.

本発明の2−トリフルオロメチルピリミジン−6(1H)−オン誘導体は、農園芸栽培場面あるいは非農耕地における有害な雑草に対して極めて優れた除草活性を有し、また、作物に対する薬害も小さく、農園芸用あるいは非農耕地用の除草剤の有効成分として有効である。   The 2-trifluoromethylpyrimidin-6 (1H) -one derivative of the present invention has extremely excellent herbicidal activity against harmful weeds in agricultural or horticultural fields or non-agricultural land, and also has little phytotoxicity to crops. It is effective as an active ingredient of herbicides for agricultural and horticultural use or non-agricultural land.

以下、上記本発明に係る2−トリフルオロメチルピリミジン−6(1H)−オン誘導体及びその製造方法並びに該誘導体を有効成分として含有する除草剤について、具体的に説明する。   Hereinafter, the 2-trifluoromethylpyrimidin-6 (1H) -one derivative according to the present invention, a method for producing the derivative, and a herbicide containing the derivative as an active ingredient will be specifically described.

本発明において、上記各式(1)、(1a)、(1b)、(1c)、(2)、(3)、(5)において、R1、R2、R3、R4、R4b、R5、X及びLで表される置換基の例示を
以下に示す。
In the present invention, in the above formulas (1), (1a), (1b), (1c), (2), (3), (5), R 1 , R 2 , R 3 , R 4 , R 4b Examples of substituents represented by, R 5 , X and L are shown below.

1で表される炭素数1〜6のフルオロアルキル基としては、フルオロメチル基、ジフ
ルオロメチル基、トリフルオロメチル基、ペンタフルオロエチル基、パーフルオロペンチル基、パーフルオロヘキシル基等を例示することができる。活性が強い点でジフルオロメチル基とトリフルオロメチル基が好ましい。
Examples of the fluoroalkyl group having 1 to 6 carbon atoms represented by R 1 include a fluoromethyl group, a difluoromethyl group, a trifluoromethyl group, a pentafluoroethyl group, a perfluoropentyl group, and a perfluorohexyl group. Can do. A difluoromethyl group and a trifluoromethyl group are preferred from the viewpoint of strong activity.

2及びR5で表される炭素数1〜6のアルキル基としては、直鎖状もしくは分枝状のいずれであってもよく、メチル基、エチル基、プロピル基、イソプロピル基、ブチル基、イソブチル基、sec−ブチル基、tert−ブチル基、ペンチル基、イソアミル基、ネオペンチル基、2−ペンチル基、3−ペンチル基、2−メチルブチル基、tert−ペンチル基、ヘキシル基、イソヘキシル基、2−エチルブチル基等を例示することができる。活性が強い点でR2とR5はメチル基が好ましい。 The alkyl group having 1 to 6 carbon atoms represented by R 2 and R 5 may be linear or branched, and includes a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, Isobutyl group, sec-butyl group, tert-butyl group, pentyl group, isoamyl group, neopentyl group, 2-pentyl group, 3-pentyl group, 2-methylbutyl group, tert-pentyl group, hexyl group, isohexyl group, 2- An ethylbutyl group etc. can be illustrated. In terms of strong activity, R 2 and R 5 are preferably methyl groups.

3、R4及びR4bで表される置換されていてもよい炭素数1〜6のアルキル基としては、直鎖状もしくは分枝状のいずれであってもよく、メチル基、エチル基、プロピル基、イソプロピル基、ブチル基、イソブチル基、sec−ブチル基、tert−ブチル基、ペンチル基、イソアミル基、ネオペンチル基、2−ペンチル基、3−ペンチル基、2−メチルブチル基、tert−ペンチル基、ヘキシル基、イソヘキシル基、2−エチルブチル基、4−メチルペンチル基等を例示することができる。これらのアルキル基は、含有されている水素原子が、ハロゲン原子、炭素数3〜8のシクロアルキル基、炭素数1〜6のアルキルチオ基、炭素数1〜6のアルキルスルフィニル基、炭素数1〜6のアルキルスルホニル基、炭素数1〜6のハロアルキルコキシ基、炭素数1〜6のアルコキシ基、炭素数1〜6のアルコキシカルボニル基、カルボキシ基、アシル基等で1個以上置換されていてもよく、さらに具体的には2−クロロエチル基、3−クロロプロピル基、ジフルオロメチル基、3−フルオロプロピル基、シクロプロピルメチル基、シクロペンチルメチル基、シクロヘキシルメチル基、2−メチルチオエチル基、2−メチルスルフィニルエチル基、2−メチルスルホニルエチル基、メトキシメチル基、エトキシメチル基、2−メトキシエチル基、2−クロロエトキシメチル基、メトキシカルボニルメチル基、エトキシカルボニルメチル基、tert−ブトキシカルボニルメチル基、1−メトキシカルボニルエチル基、1−エトキシカルボニルエチル基、2−エトキシカルボニルエチル基、カルボキシメチル基、アセトニル基、1−アセチルエチル基、3−アセチルプロピル基、フェナシル基、4−クロロフェナシル基、2,4−ジフルオロフェナシル基、4−メチルフェナシル基、4−イソプロピルフェナシル基、4−イソブチルフェナシル基、4−シクロヘキシルフェナシル基、4−シアノフェナシル基、4−ニトロフェナシル基等を例示することができる。活性が強い点でR3はメチル基、エチル基又はプロピル基が好ましい。 The optionally substituted alkyl group represented by R 3 , R 4 and R 4b may be linear or branched, and may be a methyl group, an ethyl group, Propyl group, isopropyl group, butyl group, isobutyl group, sec-butyl group, tert-butyl group, pentyl group, isoamyl group, neopentyl group, 2-pentyl group, 3-pentyl group, 2-methylbutyl group, tert-pentyl group Hexyl group, isohexyl group, 2-ethylbutyl group, 4-methylpentyl group and the like. In these alkyl groups, the hydrogen atoms contained are halogen atoms, cycloalkyl groups having 3 to 8 carbon atoms, alkylthio groups having 1 to 6 carbon atoms, alkylsulfinyl groups having 1 to 6 carbon atoms, 1 or more substituted with 6 alkylsulfonyl groups, 1 to 6 haloalkyloxy groups, 1 to 6 alkoxy groups, 1 to 6 alkoxycarbonyl groups, carboxy groups, acyl groups, etc. More specifically, 2-chloroethyl group, 3-chloropropyl group, difluoromethyl group, 3-fluoropropyl group, cyclopropylmethyl group, cyclopentylmethyl group, cyclohexylmethyl group, 2-methylthioethyl group, 2- Methylsulfinylethyl group, 2-methylsulfonylethyl group, methoxymethyl group, ethoxymethyl group, 2-methoxyethyl Group, 2-chloroethoxymethyl group, methoxycarbonylmethyl group, ethoxycarbonylmethyl group, tert-butoxycarbonylmethyl group, 1-methoxycarbonylethyl group, 1-ethoxycarbonylethyl group, 2-ethoxycarbonylethyl group, carboxymethyl Group, acetonyl group, 1-acetylethyl group, 3-acetylpropyl group, phenacyl group, 4-chlorophenacyl group, 2,4-difluorophenacyl group, 4-methylphenacyl group, 4-isopropylphenacyl group, Examples thereof include 4-isobutylphenacyl group, 4-cyclohexylphenacyl group, 4-cyanophenacyl group, 4-nitrophenacyl group and the like. In view of strong activity, R 3 is preferably a methyl group, an ethyl group or a propyl group.

4及びR4bで表される置換されていてもよい炭素数3〜6のアルケニル基としては、
直鎖状もしくは分枝状あるいは環状のいずれであってもよく、アリル基、2−メチル−2−プロペニル基、2−ブテニル基、3−ブテニル基、2−ペンテニル基、3−ペンテニル基、2−ヘキセニル基、3−ヘキセニル基等を例示することができる。またこれらのアルケニル基は、含有されている水素原子が、ハロゲン原子等で置換されていてもよく、例えば、2−クロロ−2−プロペニル基、3−クロロプロペニル基、4−クロロ−2−ブテニル基等を例示することができる。活性が強い点でアリル基が好ましい。
Examples of the optionally substituted alkenyl group having 3 to 6 carbon atoms represented by R 4 and R 4b include
It may be linear, branched or cyclic, and may be an allyl group, 2-methyl-2-propenyl group, 2-butenyl group, 3-butenyl group, 2-pentenyl group, 3-pentenyl group, 2 -A hexenyl group, 3-hexenyl group, etc. can be illustrated. In these alkenyl groups, the hydrogen atom contained therein may be substituted with a halogen atom or the like. For example, 2-chloro-2-propenyl group, 3-chloropropenyl group, 4-chloro-2-butenyl Examples include groups. An allyl group is preferred because of its strong activity.

4及びR4bで表される置換されていてもよい炭素数3〜6のアルキニル基としては、
直鎖状もしくは分枝状のいずれであってもよく、プロパルギル基、1−ブチン−3−イル基、3−メチル−1−ブチン−3−イル基、2−ブチニル基、2−ペンチニル基、3−ペンチニル基等を例示することができる。また、これらのアルキニル基は、含有されている水素原子が、ハロゲン原子等で置換されていてもよく、例えば、3−フルオロ−2−プロピニル基、3−クロロ−2−プロピニル基、3−ブロモ−2−プロピニル基、4−ブロモ−2−ブチニル基、4−ブロモ−3−ブチニル基等を例示することができる。活性が強い点でプロパルギル基が好ましい。
Examples of the optionally substituted alkynyl group having 3 to 6 carbon atoms represented by R 4 and R 4b include
Either linear or branched, may be a propargyl group, 1-butyn-3-yl group, 3-methyl-1-butyn-3-yl group, 2-butynyl group, 2-pentynyl group, Examples thereof include a 3-pentynyl group. In these alkynyl groups, the hydrogen atom contained therein may be substituted with a halogen atom or the like. For example, 3-fluoro-2-propynyl group, 3-chloro-2-propynyl group, 3-bromo Examples include 2-propynyl group, 4-bromo-2-butynyl group, 4-bromo-3-butynyl group and the like. A propargyl group is preferred because of its strong activity.

4及びR4bで表される置換されていてもよい炭素数7〜11のアラルキル基としては
、ベンジル基、1−フェニルエチル基、2−フェニルエチル基、1−フェニルプロピル基、1−ナフチルメチル基、2−ナフチルメチル基等を例示することができる。これらのアラルキル基は、含有されている水素原子が、ハロゲン原子、炭素数1〜12のアルキル基、炭素数1〜6のハロアルキル基、炭素数1〜6のアルキルオキシ基、炭素数1〜6のハロアルキルオキシ基、炭素数1〜6のアルキルチオ基、炭素数1〜6のアルキルスルホニル基、炭素数1〜6のアルキルオキシカルボニル基、カルボキシ基、置換されていてもよいカルバモイル基、シアノ基、ニトロ基等で1個以上置換されていてもよい。さらに具体的には、ベンジル基、2−フルオロベンジル基、3−フルオロベンジル基、4−フルオロベンジル基、2−クロロベンジル基、3−クロロベンジル基、4−クロロベンジル基、2−ブロモベンジル基、3−ブロモベンジル基、4−ブロモベンジル基、3,4−ジフルオロベンジル基、3,4−ジクロロベンジル基、3,4−ジブロモベンジル基、2−メチルベンジル基、3−メチルベンジル基、4−メチルベンジル基、2,4−ジメチルベンジル基、3,4−ジメチルベンジル基、2−トリフルオロメチルベンジル基、3−トリフルオロメチルベンジル基、4−トリフルオロメチルベンジル基、3,4−ビス(トリフルオロメチル)ベンジル基、2,4−ビス(トリフルオロメチル)ベンジル基、2−メトキシカルボニルベンジル基、3−メトキシカルボニルベンジル基、4−メトキシカルボニルベンジル基、3−カルボキシベンジル基、4−カルボキシベンジル基、3−(N,N−ジメチルカルバモイル)ベンジル基、4−(N,N−ジメチルカルバモイル)ベンジル基、3−(N,N−ジエチルカルバモイル)ベンジル基、3−(N−エチル−N−プロピルカルバモイル)ベンジル基、3−シアノベンジル基、4−シアノベンジル基、2−メトキシベンジル基、3−メトキシベンジル基、4−メトキシベンジル基、3,4−ジメトキシベンジル基、4−トリフルオロメトキシベンジル基、4−メチルチオベンジル基、4−メチルスルホニルベンジル基、2−ニトロベンジル基、3−ニトロベンジル基、4−ニトロベンジル基、1−(2−フルオロフェニル)エチル基、1−(2−クロロフェニル)エチル基、1−(2−ブロモフェニル)エチル基、1−(3−フルオロフェニル)エチル基、1−(3−クロロフェニル)エチル基、1−(3−ブロモフェニル)エチル基、1−(4−フルオロフェニル)エチル基、1−(4−クロロフェニル)エチル基、1−(4−ブロモフェニル)エチル基、1−(2−トリフルオロメチルフェニル)エチル基、1−(3−トリフルオロメチルフェニル)エチル基、1−(4−トリフルオロメチルフェニル)エチル基、2−(3−ブロモフェニル)エチル基、2−(3−トリフルオロメチルフェニル)エチル基、3−フェニルプロピル基、4−フェニルブチル基等を例示することができる。
Examples of the optionally substituted aralkyl group having 7 to 11 carbon atoms represented by R 4 and R 4b include benzyl group, 1-phenylethyl group, 2-phenylethyl group, 1-phenylpropyl group, 1-naphthyl. A methyl group, 2-naphthylmethyl group, etc. can be illustrated. In these aralkyl groups, the hydrogen atom contained is a halogen atom, an alkyl group having 1 to 12 carbon atoms, a haloalkyl group having 1 to 6 carbon atoms, an alkyloxy group having 1 to 6 carbon atoms, or 1 to 6 carbon atoms. Haloalkyloxy group, an alkylthio group having 1 to 6 carbon atoms, an alkylsulfonyl group having 1 to 6 carbon atoms, an alkyloxycarbonyl group having 1 to 6 carbon atoms, a carboxy group, an optionally substituted carbamoyl group, a cyano group, One or more nitro groups may be substituted. More specifically, benzyl group, 2-fluorobenzyl group, 3-fluorobenzyl group, 4-fluorobenzyl group, 2-chlorobenzyl group, 3-chlorobenzyl group, 4-chlorobenzyl group, 2-bromobenzyl group. 3-bromobenzyl group, 4-bromobenzyl group, 3,4-difluorobenzyl group, 3,4-dichlorobenzyl group, 3,4-dibromobenzyl group, 2-methylbenzyl group, 3-methylbenzyl group, 4 -Methylbenzyl group, 2,4-dimethylbenzyl group, 3,4-dimethylbenzyl group, 2-trifluoromethylbenzyl group, 3-trifluoromethylbenzyl group, 4-trifluoromethylbenzyl group, 3,4-bis (Trifluoromethyl) benzyl group, 2,4-bis (trifluoromethyl) benzyl group, 2-methoxycarbonylbenzyl 3-methoxycarbonylbenzyl group, 4-methoxycarbonylbenzyl group, 3-carboxybenzyl group, 4-carboxybenzyl group, 3- (N, N-dimethylcarbamoyl) benzyl group, 4- (N, N-dimethylcarbamoyl) Benzyl group, 3- (N, N-diethylcarbamoyl) benzyl group, 3- (N-ethyl-N-propylcarbamoyl) benzyl group, 3-cyanobenzyl group, 4-cyanobenzyl group, 2-methoxybenzyl group, 3 -Methoxybenzyl group, 4-methoxybenzyl group, 3,4-dimethoxybenzyl group, 4-trifluoromethoxybenzyl group, 4-methylthiobenzyl group, 4-methylsulfonylbenzyl group, 2-nitrobenzyl group, 3-nitrobenzyl Group, 4-nitrobenzyl group, 1- (2-fluorophenyl) ethyl group 1- (2-chlorophenyl) ethyl group, 1- (2-bromophenyl) ethyl group, 1- (3-fluorophenyl) ethyl group, 1- (3-chlorophenyl) ethyl group, 1- (3-bromophenyl) Ethyl group, 1- (4-fluorophenyl) ethyl group, 1- (4-chlorophenyl) ethyl group, 1- (4-bromophenyl) ethyl group, 1- (2-trifluoromethylphenyl) ethyl group, 1- (3-trifluoromethylphenyl) ethyl group, 1- (4-trifluoromethylphenyl) ethyl group, 2- (3-bromophenyl) ethyl group, 2- (3-trifluoromethylphenyl) ethyl group, 3- Examples thereof include a phenylpropyl group and a 4-phenylbutyl group.

Xで表されるハロゲン原子としては、フッ素原子、塩素原子、臭素原子等を例示することができる。活性が強い点でフッ素原子又は塩素原子が好ましい。
Lで表される脱離基としては、塩素原子、臭素原子、ヨウ素原子、メチルスルホニルオキシ基、p−トルエンスルホニルオキシ基等が挙げられる。
Examples of the halogen atom represented by X include a fluorine atom, a chlorine atom, and a bromine atom. From the viewpoint of strong activity, a fluorine atom or a chlorine atom is preferable.
Examples of the leaving group represented by L include a chlorine atom, a bromine atom, an iodine atom, a methylsulfonyloxy group, and a p-toluenesulfonyloxy group.

<2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(1)>
本発明に係る第1の発明である、2−トリフルオロメチルピリミジン−6(1H)−オ
ン誘導体は一般式(1)で示される。
<2-Trifluoromethylpyrimidin-6 (1H) -one derivative (1)>
The 2-trifluoromethylpyrimidin-6 (1H) -one derivative which is the first invention according to the present invention is represented by the general formula (1).

Figure 2009137851
Figure 2009137851

式(1)中、R1、R2、R3、R4、X及びWは前記と同じ意味を表す。
<2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(2)の製造方法>
次に、本発明に係る第2の発明である、2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(2)の製造方法について詳細に説明する。
In formula (1), R 1 , R 2 , R 3 , R 4 , X and W represent the same meaning as described above.
<Method for Producing 2-Trifluoromethylpyrimidin-6 (1H) -one Derivative (2)>
Next, the production method of 2-trifluoromethylpyrimidin-6 (1H) -one derivative (2), which is the second invention of the present invention, will be described in detail.

Figure 2009137851
Figure 2009137851

上記反応式中、R1、R2、R3、R5、X及びWは前記と同じ意味を表す。Ybはハロゲン
原子を表す。
第2の発明は、5−(4−ハロ−3−ニトロフェニル)−2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(1b)とグリコール酸類又はチオグリコール酸類(5)とを、塩基存在下にて反応させることを特徴とする、2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(2)の製造方法である。
In the above reaction formula, R 1 , R 2 , R 3 , R 5 , X and W represent the same meaning as described above. Y b represents a halogen atom.
According to a second aspect of the invention, a 5- (4-halo-3-nitrophenyl) -2-trifluoromethylpyrimidin-6 (1H) -one derivative (1b) and glycolic acid or thioglycolic acid (5) A method for producing a 2-trifluoromethylpyrimidin-6 (1H) -one derivative (2), characterized by reacting in the presence.

(5−(4−ハロ−3−ニトロフェニル)−2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(1b))
出発原料である5−(4−ハロ−3−ニトロフェニル)−2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(1b)は、5−ハロ−2−トリフルオロメチルピリミジン誘導体と4−ハロアリールホウ酸類とをパラジウム触媒及び塩基存在下にて反応させ、5−置換フェニル−2−トリフルオロメチルピリミジン誘導体とし、窒素原子上をアルキル化した後に、ニトロ化することによって製造することができる(後述する参考例1〜10参照。)。
(5- (4-halo-3-nitrophenyl) -2-trifluoromethylpyrimidin-6 (1H) -one derivative (1b))
The starting material, 5- (4-halo-3-nitrophenyl) -2-trifluoromethylpyrimidin-6 (1H) -one derivative (1b), is obtained from 5-halo-2-trifluoromethylpyrimidine derivative and 4- It can be produced by reacting with haloarylboric acids in the presence of a palladium catalyst and a base to give a 5-substituted phenyl-2-trifluoromethylpyrimidine derivative, alkylating on the nitrogen atom, and then nitration. (See Reference Examples 1 to 10 below.)

(グリコール酸類又はチオグリコール酸類(5))
本反応で用いることのできるグリコール酸類としては、グリコール酸メチル、グリコール酸エチル、グリコール酸プロピル、2−メチルグリコール酸エチル、2−エチルグリコール酸エチル、2−プロピルグリコール酸エチル等が挙げられる。
(Glycolic acids or thioglycolic acids (5))
Examples of glycolic acids that can be used in this reaction include methyl glycolate, ethyl glycolate, propyl glycolate, ethyl 2-methylglycolate, ethyl 2-ethylglycolate, and ethyl 2-propylglycolate.

本反応で用いることのできるチオグリコール酸類としては、チオグリコール酸メチル、チオグリコール酸エチル、チオグリコール酸プロピル、2−メチルチオグリコール酸エチル、2−エチルチオグリコール酸エチル、2−プロピルチオグリコール酸エチル等が挙げられる。   Examples of the thioglycolic acid that can be used in this reaction include methyl thioglycolate, ethyl thioglycolate, propyl thioglycolate, ethyl 2-methylthioglycolate, ethyl 2-ethylthioglycolate, and ethyl 2-propylthioglycolate. Etc.

(塩基)
本反応は塩基存在下に行うことが必須であり、塩基としては、水素化ナトリウム、ナトリウムアミド、炭酸ナトリウム、炭酸カリウム、ナトリウムメトキシド、ナトリウムエトキシド、カリウム−tert−ブトキシド、水酸化ナトリウム、水酸化カリウム等のアルカリ金属塩基;トリエチルアミン、トリブチルアミン、N−メチルモルホリン、ピリジン、ジメチルアニリン等の有機アミン類を用いることができる。
(base)
It is essential to carry out this reaction in the presence of a base. Examples of the base include sodium hydride, sodium amide, sodium carbonate, potassium carbonate, sodium methoxide, sodium ethoxide, potassium tert-butoxide, sodium hydroxide, water Alkali metal bases such as potassium oxide; organic amines such as triethylamine, tributylamine, N-methylmorpholine, pyridine and dimethylaniline can be used.

塩基の使用量は特に制限はないが、反応基質である5−(4−ハロ−3−ニトロフェニル)−2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(1b)に対して等量以上用いて反応を実施することにより、収率良く目的物を得ることができる。   The amount of base used is not particularly limited, but is equivalent to the reaction substrate 5- (4-halo-3-nitrophenyl) -2-trifluoromethylpyrimidin-6 (1H) -one derivative (1b). By carrying out the reaction using the above, the desired product can be obtained with good yield.

(溶媒)
本反応は溶媒中で行うことが好ましく、反応に害を及ぼさない溶媒であれば使用することができ、例えば、ジエチルエーテル、THF、DME、ジオキサン等のエーテル系溶媒;アセトン、エチルメチルケトン等のケトン系溶媒;酢酸エチル、酢酸ブチル等のエステル系溶媒;アセトニトリル、プロピオニトリル等のニトリル類;ベンゼン、トルエン、キシレン、クロロベンゼン等の芳香族炭化水素系溶媒;DMF、N−メチルピロリドン等のアミド類;DMSO、水あるいはこれらの混合溶媒等を用いることができる。
(solvent)
This reaction is preferably carried out in a solvent, and any solvent that does not harm the reaction can be used. For example, ether solvents such as diethyl ether, THF, DME, dioxane; acetone, ethyl methyl ketone, etc. Ketone solvents; Ester solvents such as ethyl acetate and butyl acetate; Nitriles such as acetonitrile and propionitrile; Aromatic hydrocarbon solvents such as benzene, toluene, xylene and chlorobenzene; Amides such as DMF and N-methylpyrrolidone Class: DMSO, water, or a mixed solvent thereof can be used.

(反応温度)
反応温度については特に制限はないが、0℃から150℃の範囲から適宜選ばれた温度で反応させることにより、収率よく目的物である2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(2)を得ることができる。
(Reaction temperature)
The reaction temperature is not particularly limited, but the 2-trifluoromethylpyrimidin-6 (1H) -one derivative, which is the target product, is obtained in a high yield by reacting at a temperature appropriately selected from the range of 0 ° C. to 150 ° C. (2) can be obtained.

反応終了後は、通常の後処理操作により前記目的物を得ることができるが、必要であればカラムクロマトグラフィーあるいは再結晶等により前記目的物を精製することもできる。   After completion of the reaction, the target product can be obtained by ordinary post-treatment operations, but the target product can also be purified by column chromatography or recrystallization if necessary.

<2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(1a)の製造方法>
次に、本発明に係る第3の発明である、2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(1a)の製造方法について詳細に説明する。
<Method for Producing 2-Trifluoromethylpyrimidin-6 (1H) -one Derivative (1a)>
Next, the production method of 2-trifluoromethylpyrimidin-6 (1H) -one derivative (1a), which is the third invention according to the present invention, will be described in detail.

Figure 2009137851
Figure 2009137851

上記反応式中、R1、R2、R3、R5、X及びWは前記と同じ意味を表す。
第3の発明は、2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(2)のニトロ基を還元し分子内アミド化反応を行うことを特徴とする、2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(1a)の製造方法である。
In the above reaction formula, R 1 , R 2 , R 3 , R 5 , X and W represent the same meaning as described above.
According to a third aspect of the invention, 2-trifluoromethylpyrimidine-6 is characterized by performing an intramolecular amidation reaction by reducing the nitro group of the 2-trifluoromethylpyrimidin-6 (1H) -one derivative (2). It is a manufacturing method of a (1H) -one derivative (1a).

本反応では、2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(2)のニトロ基を還元することによって、反応過程では上記反応式中の一般式(2’)で示されるアミノ体を経由し、速やかに分子内環化反応が起こることによって、一般式(1a)で示される2−トリフルオロメチルピリミジン−6(1H)−オン誘導体が製造される。   In this reaction, by reducing the nitro group of the 2-trifluoromethylpyrimidin-6 (1H) -one derivative (2), the amino compound represented by the general formula (2 ′) in the above reaction formula is converted in the reaction process. A 2-trifluoromethylpyrimidin-6 (1H) -one derivative represented by the general formula (1a) is produced by a rapid intramolecular cyclization reaction.

(還元方法)
本反応における2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(2)のニトロ基の還元方法としては、亜鉛末、還元鉄、錫末、塩化第一スズ、塩化チタンなどの還元剤を用いる方法;ラネーニッケル存在下にヒドラジンなどの水素供与体を用いる方法;ラネーニッケル、パラジウム炭素、水酸化パラジウム、酸化白金等の触媒の存在下での接触水素還元;又は接触水素移動還元などが挙げられる。中でも収率が良い点でパラジウム炭素を用いた接触水素還元が好ましい。
(Reduction method)
As a method for reducing the nitro group of the 2-trifluoromethylpyrimidin-6 (1H) -one derivative (2) in this reaction, a reducing agent such as zinc powder, reduced iron, tin powder, stannous chloride, titanium chloride or the like is used. A method using a hydrogen donor such as hydrazine in the presence of Raney nickel; catalytic hydrogen reduction in the presence of a catalyst such as Raney nickel, palladium carbon, palladium hydroxide, platinum oxide; or catalytic hydrogen transfer reduction. Of these, catalytic hydrogen reduction using palladium carbon is preferred because of its good yield.

(溶媒)
本反応は溶媒中で行う必要があり、反応に害を及ぼさない溶媒であれば使用することができる。例えば、ジエチルエーテル、THF、DME、ジオキサン等のエーテル系溶媒;アセトン、エチルメチルケトン等のケトン系溶媒;酢酸エチル、酢酸ブチル等のエステル系溶媒;アセトニトリル、プロピオニトリル等のニトリル類;ベンゼン、トルエン、キシレン、クロロベンゼン等の芳香族炭化水素系溶媒;DMF、N−メチルピロリドン等のアミド類;酢酸、DMSO、水あるいはこれらの混合溶媒等を用いることができる。
(solvent)
This reaction must be carried out in a solvent, and any solvent that does not harm the reaction can be used. For example, ether solvents such as diethyl ether, THF, DME, dioxane; ketone solvents such as acetone and ethyl methyl ketone; ester solvents such as ethyl acetate and butyl acetate; nitriles such as acetonitrile and propionitrile; benzene, Aromatic hydrocarbon solvents such as toluene, xylene and chlorobenzene; amides such as DMF and N-methylpyrrolidone; acetic acid, DMSO, water or a mixed solvent thereof can be used.

(温度)
反応温度については特に制限はないが、0℃から200℃の範囲から適宜選ばれた温度で反応させることにより、収率よく目的物である2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(1a)を得ることができる。反応終了後は、通常の後処理操作により前記目的物を得ることができるが、必要であればカラムクロマトグラフィーあるいは再結晶等により前記目的物を精製することもできる。
(temperature)
The reaction temperature is not particularly limited, but the 2-trifluoromethylpyrimidin-6 (1H) -one derivative, which is the target product, can be obtained in a high yield by reacting at a temperature appropriately selected from the range of 0 ° C to 200 ° C. (1a) can be obtained. After completion of the reaction, the target product can be obtained by ordinary post-treatment operations, but the target product can also be purified by column chromatography or recrystallization if necessary.

<2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(1c)の製造方法>
次に、本発明に係る第4の発明である、2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(1c)の製造方法について詳細に説明する。
<Method for Producing 2-Trifluoromethylpyrimidin-6 (1H) -one Derivative (1c)>
Next, the production method of the 2-trifluoromethylpyrimidin-6 (1H) -one derivative (1c), which is the fourth invention according to the present invention, will be described in detail.

Figure 2009137851
Figure 2009137851

上記反応式中、R1、R2、R3、R4b、X、W及びLは前記と同じ意味を表す。
第4の発明は、一般式(1a)で示される2−トリフルオロメチルピリミジン−6(1H)−オン誘導体と、一般式(3)で示される化合物とを塩基の存在下に反応させ、該誘導体(1a)の4位窒素原子上に置換基(R4b)の導入を行うことを特徴とする、一般式(1c)で示される2−トリフルオロメチルピリミジン−6(1H)−オン誘導体の製造方法である。
In the above reaction formula, R 1 , R 2 , R 3 , R 4b , X, W and L represent the same meaning as described above.
In a fourth invention, a 2-trifluoromethylpyrimidin-6 (1H) -one derivative represented by the general formula (1a) is reacted with a compound represented by the general formula (3) in the presence of a base, Of the 2-trifluoromethylpyrimidin-6 (1H) -one derivative represented by the general formula (1c), wherein a substituent (R 4b ) is introduced onto the 4-position nitrogen atom of the derivative (1a) It is a manufacturing method.

(一般式(3)で示される化合物)
本反応で用いることのできる、一般式(3)で示される化合物としては、プロパルギルブロミド、1−ブロモ−2−ブチン、3−ブロモ−2−(メトキシイミノ)プロピオン酸エチル、3−トリフルオロメチルベンジルクロリド、クロロ酢酸tert−ブチル、N−ブチル−2−クロロ酢酸アミド、クロロエチルエーテル、2−クロロエチル(クロロメチル)エーテル、トリフルオロ酢酸等が挙げられる。
(Compound represented by the general formula (3))
Examples of the compound represented by the general formula (3) that can be used in this reaction include propargyl bromide, 1-bromo-2-butyne, ethyl 3-bromo-2- (methoxyimino) propionate, and 3-trifluoromethyl. Examples include benzyl chloride, tert-butyl chloroacetate, N-butyl-2-chloroacetamide, chloroethyl ether, 2-chloroethyl (chloromethyl) ether, and trifluoroacetic acid.

(塩基)
本反応は塩基存在下に行うことが必須であり、塩基としては、水素化ナトリウム、ナトリウムアミド、炭酸ナトリウム、炭酸カリウム、ナトリウムメトキシド、ナトリウムエトキシド、カリウム−tert−ブトキシド、水酸化ナトリウム、水酸化カリウム等のアルカリ金属塩基;トリエチルアミン、トリブチルアミン、N−メチルモルホリン、ピリジン、ジメチルアニリン等の有機アミン類を用いることができる。
(base)
It is essential to carry out this reaction in the presence of a base. Examples of the base include sodium hydride, sodium amide, sodium carbonate, potassium carbonate, sodium methoxide, sodium ethoxide, potassium tert-butoxide, sodium hydroxide, water Alkali metal bases such as potassium oxide; organic amines such as triethylamine, tributylamine, N-methylmorpholine, pyridine and dimethylaniline can be used.

塩基の使用量は特に制限はないが、反応基質である2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(1a)に対して等量以上用いて反応を実施することにより、収率良く目的物を得ることができる。   The amount of the base used is not particularly limited, but the yield is improved by carrying out the reaction using an equal amount or more with respect to the 2-trifluoromethylpyrimidin-6 (1H) -one derivative (1a) as the reaction substrate. The object can be obtained.

(溶媒)
本反応は溶媒中で行うことが好ましく、反応に害を及ぼさない溶媒であれば使用することができ、例えば、ジエチルエーテル、THF、DME、ジオキサン等のエーテル系溶媒;アセトン、エチルメチルケトン等のケトン系溶媒;酢酸エチル、酢酸ブチル等のエステル系溶媒;アセトニトリル、プロピオニトリル等のニトリル類;ベンゼン、トルエン、キシレン、クロロベンゼン等の芳香族炭化水素系溶媒;DMF、N−メチルピロリドン等のアミド類;DMSO、水あるいはこれらの混合溶媒等を用いることができる。
(solvent)
This reaction is preferably carried out in a solvent, and any solvent that does not harm the reaction can be used. For example, ether solvents such as diethyl ether, THF, DME, dioxane; acetone, ethyl methyl ketone, etc. Ketone solvents; Ester solvents such as ethyl acetate and butyl acetate; Nitriles such as acetonitrile and propionitrile; Aromatic hydrocarbon solvents such as benzene, toluene, xylene and chlorobenzene; Amides such as DMF and N-methylpyrrolidone Class: DMSO, water, or a mixed solvent thereof can be used.

(反応温度)
反応温度については特に制限はないが、0℃から150℃の範囲から適宜選ばれた温度で反応させることにより、収率よく目的物である2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(1c)を得ることができる。
(Reaction temperature)
The reaction temperature is not particularly limited, but the 2-trifluoromethylpyrimidin-6 (1H) -one derivative, which is the target product, is obtained in a high yield by reacting at a temperature appropriately selected from the range of 0 ° C. to 150 ° C. (1c) can be obtained.

<2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(1)を有効成分とする除草剤>
次に、第5の発明である除草剤について説明する。
<Herbicide containing 2-trifluoromethylpyrimidin-6 (1H) -one derivative (1) as an active ingredient>
Next, the herbicide which is the fifth invention will be described.

本発明に係る第5の発明である除草剤は、本発明に係る第1の発明である、2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(1)を有効成分として含有する。
第1の発明の2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(1)を除草剤として使用する場合、第1の発明の2−トリフルオロメチルピリミジン−6(1H)−オン誘導体を、有害な雑草等が生えている農園芸品の栽培地や非農耕地にそのまま施用してもよいが、通常、適当な補助剤を用い、水和剤、粒剤、乳剤、フロアブル剤等の形態で使用する。
The herbicide which is the 5th invention concerning the present invention contains 2-trifluoromethylpyrimidin-6 (1H) -one derivative (1) which is the 1st invention concerning the present invention as an active ingredient.
When the 2-trifluoromethylpyrimidin-6 (1H) -one derivative (1) of the first invention is used as a herbicide, the 2-trifluoromethylpyrimidin-6 (1H) -one derivative of the first invention is It may be applied as it is to farming and horticultural cultivated or non-cultivated lands where harmful weeds are growing, but usually with appropriate adjuvants, such as wettable powders, granules, emulsions, flowables, etc. Use in form.

補助剤としては、例えば、カオリン、ベントナイト、タルク、珪藻土、ホワイトカーボン、デンプン等の固体担体;水、アルコール類(メタノール、エタノール、プロパノール、ブタノール、エチレングリコール等)、ケトン類(アセトン、メチルエチルケトン、シクロヘキサノン等)、エーテル類(ジエチルエーテル、1,4−ジオキサン、セロソルブ類等)、脂肪族炭化水素類(ケロシン、灯油等)、芳香族炭化水素類(ベンゼン、トルエン、キシレン、ソルベントナフサ、メチルナフタレン等)、ハロゲン化炭化水素類(ジクロロエタン、四塩化炭素、トリクロロベンゼン等)、酸アミド類(DMF等)、エステル類(酢酸エチル、酢酸ブチル、脂肪酸グリセリンエステル類等)、ニトリル類(アセトニ
トリル等)等の溶媒;非イオン系界面活性剤(ポリオキシエチレンアルキルアリルエーテル、ポリオキシエチレンソルビタンモノラウレイト等)、カチオン系界面活性剤(アルキルジメチルベンジルアンモニウムクロリド、アルキルピリジニウムクロリド等)、アニオン系界面活性剤(アルキルベンゼンスルホン酸塩、リグニンスルホン酸塩、高級アルコール硫酸塩等)、両性系界面活性剤(アルキルジメチルベタイン、ドデシルアミノエチルグリシン等)等の界面活性剤等が挙げられる。これらの固体担体、溶媒、界面活性剤等は、それぞれ必要に応じて1種又は2種以上の混合物として使用される。
Examples of auxiliary agents include solid carriers such as kaolin, bentonite, talc, diatomaceous earth, white carbon, and starch; water, alcohols (methanol, ethanol, propanol, butanol, ethylene glycol, etc.), and ketones (acetone, methyl ethyl ketone, cyclohexanone). Etc.), ethers (diethyl ether, 1,4-dioxane, cellosolves, etc.), aliphatic hydrocarbons (kerosene, kerosene, etc.), aromatic hydrocarbons (benzene, toluene, xylene, solvent naphtha, methylnaphthalene, etc.) ), Halogenated hydrocarbons (dichloroethane, carbon tetrachloride, trichlorobenzene, etc.), acid amides (DMF, etc.), esters (ethyl acetate, butyl acetate, fatty acid glycerin esters, etc.), nitriles (acetonitrile, etc.), etc. Solvents; non-ionic Surfactant (polyoxyethylene alkyl allyl ether, polyoxyethylene sorbitan monolaurate, etc.), cationic surfactant (alkyl dimethyl benzyl ammonium chloride, alkyl pyridinium chloride, etc.), anionic surfactant (alkyl benzene sulfonate, Surfactants such as lignin sulfonate, higher alcohol sulfate, etc.) and amphoteric surfactants (alkyl dimethyl betaine, dodecylaminoethyl glycine, etc.). These solid carriers, solvents, surfactants and the like are each used as one or a mixture of two or more as required.

例えば、第1の発明である2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(1)を有効成分とする第5の発明である除草剤は、同一分野に用いる他の農薬、例えば、殺虫剤、殺菌剤、植物成長調節剤及び肥料等と混合施用することができる。また、他の1種以上の除草剤と混合施用することにより、除草効果をより安定化することも可能である。   For example, the herbicide which is the fifth invention comprising the 2-trifluoromethylpyrimidin-6 (1H) -one derivative (1) of the first invention as an active ingredient is another agricultural chemical used in the same field, for example, It can be mixed with insecticides, fungicides, plant growth regulators and fertilizers. In addition, the herbicidal effect can be further stabilized by mixing with one or more other herbicides.

第5の発明である除草剤と他の除草剤とを混合施用する場合、第5の発明である除草剤及び他の除草剤の各々の製剤を施用時に混合してもよいが、あらかじめ両方を含有する製剤として施用してもよい。   When the herbicide of the fifth invention and other herbicides are mixed and applied, the preparations of the herbicide of the fifth invention and other herbicides may be mixed at the time of application. You may apply as a formulation to contain.

このような、第1の発明である2−トリフルオロメチルピリミジン−6(1H)−オン誘導体(1)を有効成分とする、第5の発明である除草剤は、農園芸栽培場面あるいは非農耕地における有害な雑草に対して極めて優れた除草活性と、作物に対する薬害が小さいという安全性とを兼ね備えている。   The herbicide according to the fifth invention, which comprises the 2-trifluoromethylpyrimidin-6 (1H) -one derivative (1) as the first invention as an active ingredient, is used for agricultural or horticultural scenes or non-agriculture. It combines extremely good herbicidal activity against harmful weeds on the ground and safety with low phytotoxicity to crops.

以下、実施例及び参考例により本発明をさらに詳細に説明するが、本発明はこれらに限定されるものではない。
[実施例1]
Hereinafter, although an example and a reference example explain the present invention still in detail, the present invention is not limited to these.
[Example 1]

Figure 2009137851
Figure 2009137851

4−[4−ジフルオロメチル−1−メチル−2−トリフルオロメチル−6(1H)−オキソピリミジン−5−イル]−2−ニトロフェノキシ酢酸エチル(483mg,1.96mmol)のトルエン(5ml)溶液にパラジウム−カーボン(100mg)を加え、水素(4atm)を添加し80℃で8時間加圧攪拌した。反応終了後、触媒を濾別し溶媒を減圧留去した。残渣をシリカゲルカラムクロマトグラフィー(ヘキサン:酢酸エチル=2:1(体積比))で精製することによって、6−[4−ジフルオロメチル−1−メチル−6(1H)−オキソ−2−トリフルオロメチルピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オンの白色固体(271mg,66%)を得た。   A solution of ethyl 4- [4-difluoromethyl-1-methyl-2-trifluoromethyl-6 (1H) -oxopyrimidin-5-yl] -2-nitrophenoxyacetate (483 mg, 1.96 mmol) in toluene (5 ml). To the mixture was added palladium-carbon (100 mg), hydrogen (4 atm) was added, and the mixture was stirred under pressure at 80 ° C. for 8 hours. After completion of the reaction, the catalyst was filtered off and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (hexane: ethyl acetate = 2: 1 (volume ratio)) to give 6- [4-difluoromethyl-1-methyl-6 (1H) -oxo-2-trifluoromethyl. A white solid (271 mg, 66%) of pyrimidin-5-yl] -2H-1,4-benzoxazin-3 (4H) -one was obtained.

6−[4−ジフルオロメチル−1−メチル−6(1H)−オキソ−2−トリフルオロメチルピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オンの融点(mp)及びNMRの測定結果を以下に示す。   Melting point of 6- [4-difluoromethyl-1-methyl-6 (1H) -oxo-2-trifluoromethylpyrimidin-5-yl] -2H-1,4-benzoxazin-3 (4H) -one (mp ) And NMR measurement results are shown below.

mp:230〜232℃
1H−NMR(CDCl3,TMS,ppm):δ3.73(q,JHF=1.3Hz,3
H)、4.64(s,2H)、6.13(t,JHF=52Hz,1H)、6.88(d,J=2.0Hz,1H)、6.90(dd,J=2.0 and 8.3Hz,1H)、7.05(d,J=8.3Hz,1H)、8.67(s,1H)
[実施例2]
mp: 230-232 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 3.73 (q, J HF = 1.3 Hz, 3
H), 4.64 (s, 2H), 6.13 (t, J HF = 52 Hz, 1H), 6.88 (d, J = 2.0 Hz, 1H), 6.90 (dd, J = 2) 0.0 and 8.3 Hz, 1H), 7.05 (d, J = 8.3 Hz, 1H), 8.67 (s, 1H)
[Example 2]

Figure 2009137851
Figure 2009137851

6−[4−ジフルオロメチル−1−メチル−6(1H)−オキソ−2−トリフルオロメチルピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オン(200mg,0.53mmol)のアセトニトリル(2.5ml)溶液にプロパルギルブロミド(0.08ml,1.06mmol)と炭酸カリウム(146mg,1.06mmol)とを加え、8時間加熱還流した。反応終了後、反応混合物に1N−塩酸(15ml)を加え、酢酸エチル(15ml×2)で抽出した。有機層を水(20ml)で洗浄し、無水硫酸マグネシウムで乾燥した後、乾燥剤を濾別し溶媒を減圧留去した。残渣をシリカゲルカラムクロマトグラフィー(ヘキサン:酢酸エチル=2:1(体積比))で精製することによって、6−[4−ジフルオロメチル−1−メチル−6(1H)−オキソ−2−トリフルオロメチルピリミジン−5−イル]−4−プロパルギル−2H−1,4−ベンゾオキサジン−3(4H)−オンの白色固体(119mg,55%)を得た。   6- [4-Difluoromethyl-1-methyl-6 (1H) -oxo-2-trifluoromethylpyrimidin-5-yl] -2H-1,4-benzoxazin-3 (4H) -one (200 mg, 0 .53 mmol) in acetonitrile (2.5 ml) were added propargyl bromide (0.08 ml, 1.06 mmol) and potassium carbonate (146 mg, 1.06 mmol), and the mixture was heated to reflux for 8 hours. After completion of the reaction, 1N hydrochloric acid (15 ml) was added to the reaction mixture, and the mixture was extracted with ethyl acetate (15 ml × 2). The organic layer was washed with water (20 ml), dried over anhydrous magnesium sulfate, the desiccant was filtered off, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (hexane: ethyl acetate = 2: 1 (volume ratio)) to give 6- [4-difluoromethyl-1-methyl-6 (1H) -oxo-2-trifluoromethyl. A white solid (119 mg, 55%) of pyrimidin-5-yl] -4-propargyl-2H-1,4-benzoxazin-3 (4H) -one was obtained.

6−[4−ジフルオロメチル−1−メチル−6(1H)−オキソ−2−トリフルオロメチルピリミジン−5−イル]−4−プロパルギル−2H−1,4−ベンゾオキサジン−3(4H)−オンの融点(mp)及びNMRの測定結果を以下に示す。   6- [4-Difluoromethyl-1-methyl-6 (1H) -oxo-2-trifluoromethylpyrimidin-5-yl] -4-propargyl-2H-1,4-benzoxazin-3 (4H) -one The melting point (mp) and NMR measurement results are shown below.

mp:190〜192℃
1H−NMR(CDCl3,TMS,ppm):δ2.28(t,J=0.3Hz,1H)、3.73(q,JHF=1.3Hz,3H)、4.70(d,J=0.3Hz,2H)、4.71(s,2H)、6.17(t,JHF=55Hz,1H)、7.02(dd,J=1.8 and 7.5Hz,1H)、7.11(d,J=7.5Hz,1H)、7.22(d,J=1.8Hz,1H)
[実施例3]
mp: 190-192 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 2.28 (t, J = 0.3 Hz, 1H), 3.73 (q, J HF = 1.3 Hz, 3H), 4.70 (d, J = 0.3 Hz, 2H), 4.71 (s, 2H), 6.17 (t, J HF = 55 Hz, 1H), 7.02 (dd, J = 1.8 and 7.5 Hz, 1H) 7.11 (d, J = 7.5 Hz, 1H), 7.22 (d, J = 1.8 Hz, 1H)
[Example 3]

Figure 2009137851
Figure 2009137851

アルゴン雰囲気下、水素化ナトリウム(1.52g,38.1mmol)をDMF(100ml)に加え氷冷した後、グリコール酸エチル(4.23g,40.6mmol)を滴下した。0℃で15分間撹拌した後、そのままの温度で5−(4−フルオロ−3−ニトロフェニル)−1−メチル−2,4−ビス(トリフルオロメチル)ピリミジン−6(1H)−オン(9.8g,25.4mmol)のDMF(50ml)溶液を滴下し、徐々に室温まで昇温し24時間撹拌した。反応終了後、反応混合物を1N−塩酸(400ml)にあけ、酢酸エチル(400ml×2)で抽出した。有機層を水(400ml)で洗浄し、
無水硫酸マグネシウムで乾燥した後、乾燥剤を濾別し溶媒を減圧留去し、固体を析出させた。得られた固体をジエチルエーテルで洗浄し、充分に乾燥させることで、4−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2−ニトロフェノキシ酢酸エチルの黄色固体(4.60g,39%)を得た。
Under an argon atmosphere, sodium hydride (1.52 g, 38.1 mmol) was added to DMF (100 ml) and ice-cooled, and then ethyl glycolate (4.23 g, 40.6 mmol) was added dropwise. After stirring at 0 ° C. for 15 minutes, 5- (4-fluoro-3-nitrophenyl) -1-methyl-2,4-bis (trifluoromethyl) pyrimidin-6 (1H) -one (9 (8 g, 25.4 mmol) in DMF (50 ml) was added dropwise, gradually warmed to room temperature and stirred for 24 hours. After completion of the reaction, the reaction mixture was poured into 1N hydrochloric acid (400 ml) and extracted with ethyl acetate (400 ml × 2). The organic layer is washed with water (400 ml)
After drying over anhydrous magnesium sulfate, the desiccant was filtered off and the solvent was distilled off under reduced pressure to precipitate a solid. The obtained solid was washed with diethyl ether and sufficiently dried to give 4- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -2. -A yellow solid (4.60 g, 39%) of ethyl nitrophenoxyacetate was obtained.

4−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2−ニトロフェノキシ酢酸エチルの融点(mp)及びNMRの測定結果を以下に示す。   The melting point (mp) and NMR measurement results of ethyl 4- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -2-nitrophenoxyacetate are shown below. Show.

mp:162〜163℃
1H−NMR(CDCl3,TMS,ppm):δ1.29(t,J=7.3Hz,3H)、3.73(q,JHF=1.3Hz,3H)、4.30(q,J=7.3Hz,2H)、4.81(s,2H)、7.05(d,J=8.5Hz,1H)、7.44(dd,J=2.3 and 8.5Hz,1H)、7.89(d,J=2.3Hz,1H)
[実施例4]
mp: 162-163 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 1.29 (t, J = 7.3 Hz, 3H), 3.73 (q, J HF = 1.3 Hz, 3H), 4.30 (q, J = 7.3 Hz, 2H), 4.81 (s, 2H), 7.05 (d, J = 8.5 Hz, 1H), 7.44 (dd, J = 2.3 and 8.5 Hz, 1H) ), 7.89 (d, J = 2.3 Hz, 1H)
[Example 4]

Figure 2009137851
Figure 2009137851

4−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2−ニトロフェノキシ酢酸エチル(1.46g,3.11mmol)のトルエン(60ml)溶液にパラジウム−カーボン(300mg)を加え、水素(4atm)を添加し、室温で24時間加圧攪拌した。反応終了後、触媒を瀘別し、溶媒を減圧留去した。残渣をシリカゲルカラムクロマトグラフィー(ヘキサン:ジエチルエーテル=9:1(体積比))で精製することによって、6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オンの黄色固体(500mg,40%)を得た。   Ethyl 4- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -2-nitrophenoxyacetate (1.46 g, 3.11 mmol) in toluene (60 ml) ) Palladium-carbon (300 mg) was added to the solution, hydrogen (4 atm) was added, and the mixture was stirred under pressure at room temperature for 24 hours. After completion of the reaction, the catalyst was filtered off and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (hexane: diethyl ether = 9: 1 (volume ratio)) to give 6- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl). A yellow solid (500 mg, 40%) of pyrimidin-5-yl] -2H-1,4-benzoxazin-3 (4H) -one was obtained.

6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オンの融点(mp)及びNMRの測定結果を以下に示す。   Melting point of 6- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -2H-1,4-benzoxazin-3 (4H) -one (mp ) And NMR measurement results are shown below.

mp:251〜254℃
1H−NMR(CDCl3,TMS,ppm):δ3.72(q,JHF=1.3Hz,3H)、4.67(s,2H)、6.81(d,J=2.5Hz,1H)、6.84(dd,J=2.5 and 7.5Hz,1H)、7.04(d,J=7.5Hz,1H)、9.45(s,1H)
[実施例5]
実施例2と同様にして、4−メチル−6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オンの白色固体(204mg,66%)を得た。
mp: 251-254 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 3.72 (q, J HF = 1.3 Hz, 3H), 4.67 (s, 2H), 6.81 (d, J = 2.5 Hz, 1H), 6.84 (dd, J = 2.5 and 7.5 Hz, 1H), 7.04 (d, J = 7.5 Hz, 1H), 9.45 (s, 1H)
[Example 5]
In the same manner as in Example 2, 4-methyl-6- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -2H-1,4-benzo A white solid (204 mg, 66%) of oxazin-3 (4H) -one was obtained.

4−メチル−6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オンの融点(mp)及びNMRの測定結果を以下に示す。   4-Methyl-6- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -2H-1,4-benzoxazin-3 (4H) -one The melting point (mp) and NMR measurement results are shown below.

mp:143〜146℃
1H−NMR(CDCl3,TMS,ppm):δ3.35(s,3H)、3.73(q,JHF=1.3Hz,3H)、4.69(s,2H)、6.92(d,J=1.8Hz,1H)、6.92(d,J=1.8 and 8.3Hz,1H)、7.05(d,J=8.3Hz,1H)
[実施例6]
実施例2と同様にして、4−エチル−6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−4−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オンの黄色固体(60mg,9%)を得た。
mp: 143-146 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 3.35 (s, 3H), 3.73 (q, J HF = 1.3 Hz, 3H), 4.69 (s, 2H), 6.92 (D, J = 1.8 Hz, 1H), 6.92 (d, J = 1.8 and 8.3 Hz, 1H), 7.05 (d, J = 8.3 Hz, 1H)
[Example 6]
In the same manner as in Example 2, 4-ethyl-6- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-4-yl] -2H-1,4-benzo A yellow solid (60 mg, 9%) of oxazin-3 (4H) -one was obtained.

4−エチル−6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−4−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オンの融点(mp)及びNMRの測定結果を以下に示す。   4-Ethyl-6- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-4-yl] -2H-1,4-benzoxazin-3 (4H) -one The melting point (mp) and NMR measurement results are shown below.

mp:152〜155℃
1H−NMR(CDCl3,TMS,ppm):δ1.24(t,J=7.5Hz,3H)、3.73(q,JHF=1.3Hz,3H)、3.96(q,J=7.5Hz,2H)、4.66(s,2H)、6.92(d,J=2.5Hz,1H)、6.93(dd,J=2.5 and 7.5Hz,1H)、7.05(d,J=7.5Hz,1H)
[実施例7]
実施例2と同様にして、4−アリル−6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オンの白色固体(194mg,32%)を得た。
mp: 152-155 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 1.24 (t, J = 7.5 Hz, 3H), 3.73 (q, J HF = 1.3 Hz, 3H), 3.96 (q, J = 7.5 Hz, 2H), 4.66 (s, 2H), 6.92 (d, J = 2.5 Hz, 1H), 6.93 (dd, J = 2.5 and 7.5 Hz, 1H) ), 7.05 (d, J = 7.5 Hz, 1H)
[Example 7]
In the same manner as in Example 2, 4-allyl-6- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -2H-1,4-benzo A white solid (194 mg, 32%) of oxazin-3 (4H) -one was obtained.

4−アリル−6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オンの融点(mp)及びNMRの測定結果を以下に示す。   4-Allyl-6- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -2H-1,4-benzoxazin-3 (4H) -one The melting point (mp) and NMR measurement results are shown below.

mp:124〜128℃
1H−NMR(CDCl3,TMS,ppm):δ3.72(q,JHF=1.3Hz,3H)、4.53(d,J=5.0Hz,2H)、4.71(s,2H)、5.16〜5.25(m,2H)、5.78〜5.93(m,1H)、6.92(d,J=1.3Hz,1H)、6.93(dd,J=1.3 and 8.3Hz,1H)、7.06(d,J
=8.3Hz,1H)
[実施例8]
mp: 124-128 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 3.72 (q, J HF = 1.3 Hz, 3H), 4.53 (d, J = 5.0 Hz, 2H), 4.71 (s, 2H), 5.16-5.25 (m, 2H), 5.78-5.93 (m, 1H), 6.92 (d, J = 1.3 Hz, 1H), 6.93 (dd, J = 1.3 and 8.3 Hz, 1H), 7.06 (d, J
= 8.3Hz, 1H)
[Example 8]

Figure 2009137851
Figure 2009137851

6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オン(908mg,2.31mmol)のアセトニトリル(10ml)溶液にプロパルギルブロミド(0.4ml,4.62mmol)と炭酸カリウム(639mg,4.62mmol)とを加え、6時間加熱還流した。反応終了後、反応混合物に1N−塩酸(30ml)を加え、酢酸エチル(30ml×2)で抽出した。有機層を水(30ml)で洗浄し、無水硫酸マグネシウムで乾燥した後、乾燥剤を濾別し溶媒を減圧留去した。残渣をシリカゲルカラムクロマ
トグラフィー(ヘキサン:酢酸エチル=4:1(体積比))で精製することによって、6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−4−プロパルギル−2H−1,4−ベンゾオキサジン−3(4H)−オンの白色固体(582mg,58%)を得た。
6- [1-Methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -2H-1,4-benzoxazin-3 (4H) -one (908 mg, 2 .31 mmol) in acetonitrile (10 ml) were added propargyl bromide (0.4 ml, 4.62 mmol) and potassium carbonate (639 mg, 4.62 mmol), and the mixture was heated to reflux for 6 hours. After completion of the reaction, 1N-hydrochloric acid (30 ml) was added to the reaction mixture, and the mixture was extracted with ethyl acetate (30 ml × 2). The organic layer was washed with water (30 ml) and dried over anhydrous magnesium sulfate, the desiccant was filtered off, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (hexane: ethyl acetate = 4: 1 (volume ratio)) to give 6- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl). A white solid (582 mg, 58%) of pyrimidin-5-yl] -4-propargyl-2H-1,4-benzoxazin-3 (4H) -one was obtained.

6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−4−プロパルギル−2H−1,4−ベンゾオキサジン−3(4H)−オンの融点(mp)及びNMRの測定結果を以下に示す。   6- [1-Methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -4-propargyl-2H-1,4-benzoxazin-3 (4H) -one The melting point (mp) and NMR measurement results are shown below.

mp:162〜164℃
1H−NMR(CDCl3,TMS,ppm):δ2.24(t,J=2.5Hz,1H)、3.73(q,JHF=1.3Hz,3H)、4.68(d,J=2.5Hz,2H)、4.71(s,2H)、7.00(dd,J=1.8 and 8.3Hz,1H)、7.07(d,J=8.3Hz,1H)、7.14(d,J=1.8Hz,1H)
[実施例9]
mp: 162-164 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 2.24 (t, J = 2.5 Hz, 1H), 3.73 (q, J HF = 1.3 Hz, 3H), 4.68 (d, J = 2.5 Hz, 2H), 4.71 (s, 2H), 7.00 (dd, J = 1.8 and 8.3 Hz, 1H), 7.07 (d, J = 8.3 Hz, 1H) ), 7.14 (d, J = 1.8 Hz, 1H)
[Example 9]

Figure 2009137851
Figure 2009137851

6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オン(300mg,0.77mmol)のDMF(12ml)溶液に1−ブロモ−2−ブチン(152mg,1.14mmol)と炭酸カリウム(158mg,1.14mmol)とを加え、60℃で24時間撹拌した。反応終了後、反応混合物に1N−塩酸(30ml)を加え、酢酸エチル(30ml×2)で抽出した。有機層を水(30ml)で洗浄し、無水硫酸マグネシウムで乾燥した後、乾燥剤を濾別し溶媒を減圧留去した。残渣をシリカゲルカラムクロマトグラフィー(ヘキサン:酢酸エチル=4:1(体積比))で精製することにより、4−(2−ブチニル)−6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オンの白色固体(141mg,42%)を得た。   6- [1-Methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -2H-1,4-benzoxazin-3 (4H) -one (300 mg, 0 1-bromo-2-butyne (152 mg, 1.14 mmol) and potassium carbonate (158 mg, 1.14 mmol) were added to a DMF (12 ml) solution of .77 mmol), and the mixture was stirred at 60 ° C. for 24 hours. After completion of the reaction, 1N-hydrochloric acid (30 ml) was added to the reaction mixture, and the mixture was extracted with ethyl acetate (30 ml × 2). The organic layer was washed with water (30 ml) and dried over anhydrous magnesium sulfate, the desiccant was filtered off, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (hexane: ethyl acetate = 4: 1 (volume ratio)) to give 4- (2-butynyl) -6- [1-methyl-6 (1H) -oxo-2, A white solid (141 mg, 42%) of 4-bis (trifluoromethyl) pyrimidin-5-yl] -2H-1,4-benzoxazin-3 (4H) -one was obtained.

4−(2−ブチニル)−6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オンの融点(mp)及びNMRの測定結果を以下に示す。   4- (2-butynyl) -6- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -2H-1,4-benzoxazine-3 ( The melting point (mp) and NMR measurement results of 4H) -one are shown below.

mp:180〜182℃
1H−NMR(CDCl3,TMS,ppm):δ1.75(t,J=2.5Hz,3H)、3.73(q,JHF=1.3Hz,3H)、4.61(q,J=2.5Hz,2H)、4.69(s,2H)、6.98(dd,J=2.5 and 7.5Hz,1H)、7.06(d,J=7.5Hz,1H)、7.15(d,J=2.5Hz,1H)
[実施例10]
実施例2と同様にして、6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−4−(2−ペンチニル)−2H−1,4−ベンゾオキサジン−3(4H)−オンの白色固体(92mg,26%)を得た。
mp: 180-182 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 1.75 (t, J = 2.5 Hz, 3H), 3.73 (q, J HF = 1.3 Hz, 3H), 4.61 (q, J = 2.5 Hz, 2H), 4.69 (s, 2H), 6.98 (dd, J = 2.5 and 7.5 Hz, 1H), 7.06 (d, J = 7.5 Hz, 1H) ), 7.15 (d, J = 2.5 Hz, 1H)
[Example 10]
In the same manner as in Example 2, 6- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -4- (2-pentynyl) -2H-1 , 4-Benzoxazin-3 (4H) -one was obtained as a white solid (92 mg, 26%).

6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミ
ジン−5−イル]−4−(2−ペンチニル)−2H−1,4−ベンゾオキサジン−3(4H)−オンの融点(mp)及びNMRの測定結果を以下に示す。
6- [1-Methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -4- (2-pentynyl) -2H-1,4-benzoxazine-3 ( The melting point (mp) and NMR measurement results of 4H) -one are shown below.

mp:147〜152℃
1H−NMR(CDCl3,TMS,ppm):δ1.03(t,J=7.5Hz,3H)、2.12(qt,J=2.3 and 7.5Hz,2H)、3.73(q,JHF=1.4Hz,3H)、4.63(t,J=2.3Hz,2H)、4.69(s,2H)、6.93(dd,J=2.0 and 8.3Hz,1H)、7.06(d,J=8.3Hz,1H)、7.15(d,J=2.0Hz,1H)
[実施例11]
実施例2と同様にして、4−クロロベンジル−6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オンの黄色固体(133mg,34%)を得た。
mp: 147-152 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 1.03 (t, J = 7.5 Hz, 3H), 2.12 (qt, J = 2.3 and 7.5 Hz, 2H), 3.73 (Q, J HF = 1.4 Hz, 3H), 4.63 (t, J = 2.3 Hz, 2H), 4.69 (s, 2H), 6.93 (dd, J = 2.0 and 8 .3 Hz, 1 H), 7.06 (d, J = 8.3 Hz, 1 H), 7.15 (d, J = 2.0 Hz, 1 H)
[Example 11]
In the same manner as in Example 2, 4-chlorobenzyl-6- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -2H-1,4- A yellow solid (133 mg, 34%) of benzoxazin-3 (4H) -one was obtained.

4−クロロベンジル−6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オンの融点(mp)及びNMRの測定結果を以下に示す。   4-Chlorobenzyl-6- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -2H-1,4-benzoxazine-3 (4H)- ON melting point (mp) and NMR measurement results are shown below.

mp:154〜156℃
1H−NMR(CDCl3,TMS,ppm):δ3.69(q,JHF=1.3Hz,3H)、4.78(s,2H)、5.10(s,2H)、6.77(d,J=2.0Hz,1H)、6.93(dd,J=2.0 and 7.5Hz,1H)、7.07(d,J=6.4Hz,1H)、7.14(d,J=8.8Hz,2H)、7.27(d,J=8.8Hz,2H)
[実施例12]
mp: 154-156 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 3.69 (q, J HF = 1.3 Hz, 3H), 4.78 (s, 2H), 5.10 (s, 2H), 6.77 (D, J = 2.0 Hz, 1H), 6.93 (dd, J = 2.0 and 7.5 Hz, 1H), 7.07 (d, J = 6.4 Hz, 1H), 7.14 ( d, J = 8.8 Hz, 2H), 7.27 (d, J = 8.8 Hz, 2H)
[Example 12]

Figure 2009137851
Figure 2009137851

6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オン(300mg,0.77mmol)のアセトニトリル(12ml)溶液に3−トリフルオロメチルベンジルクロリド(0.24ml,1.43mmol)と炭酸カリウム(126mg,0.929mmol)とを加え、60℃で24時間撹拌した。反応終了後、反応混合物に1N−塩酸(30ml)を加え、酢酸エチル(30ml)で抽出した。有機層を水(30ml×2)で洗浄し、無水硫酸マグネシウムで乾燥した後、乾燥剤を濾別し溶媒を減圧留去した。残渣をシリカゲルカラムクロマトグラフィー(ヘキサン:酢酸エチル=2:1(体積比))で精製することによって、6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−4−(3−トリフルオロメチルベンジル)−2H−1,4−ベンゾオキサジン−3(4H)−オンの黄色固体(149mg,38%)を得た。   6- [1-Methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -2H-1,4-benzoxazin-3 (4H) -one (300 mg, 0 .77 mmol) in acetonitrile (12 ml) was added 3-trifluoromethylbenzyl chloride (0.24 ml, 1.43 mmol) and potassium carbonate (126 mg, 0.929 mmol), and the mixture was stirred at 60 ° C. for 24 hours. After completion of the reaction, 1N hydrochloric acid (30 ml) was added to the reaction mixture, and the mixture was extracted with ethyl acetate (30 ml). The organic layer was washed with water (30 ml × 2), dried over anhydrous magnesium sulfate, the desiccant was filtered off, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (hexane: ethyl acetate = 2: 1 (volume ratio)) to give 6- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl). A yellow solid (149 mg, 38%) of pyrimidin-5-yl] -4- (3-trifluoromethylbenzyl) -2H-1,4-benzoxazin-3 (4H) -one was obtained.

6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−4−(3−トリフルオロメチルベンジル)−2H−1,4−ベンゾオ
キサジン−3(4H)−オンの融点(mp)及びNMRの測定結果を以下に示す。
6- [1-Methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -4- (3-trifluoromethylbenzyl) -2H-1,4-benzoxazine The melting point (mp) and NMR measurement results of -3 (4H) -one are shown below.

mp:172〜174℃
1H−NMR(CDCl3,TMS,ppm):δ3.68(t,JHF=1.3Hz,3H)、4.81(s,2H)、5.19(s,2H)、6.76(d,J=2.0Hz,1H)、6.93(dd,J=2.0 and 8.3Hz,1H)、7.09(d,J=8.3Hz,1H)、7.37〜7.54(m,4H)
[実施例13]
実施例2と同様にして、[6−{1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル}−3(4H)−オキソ−2H−1,4−ベンゾオキサジン−4−イル]アセトニトリルの黄色固体(100mg,30%)を得た。
mp: 172-174 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 3.68 (t, J HF = 1.3 Hz, 3H), 4.81 (s, 2H), 5.19 (s, 2H), 6.76 (D, J = 2.0 Hz, 1H), 6.93 (dd, J = 2.0 and 8.3 Hz, 1H), 7.09 (d, J = 8.3 Hz, 1H), 7.37- 7.54 (m, 4H)
[Example 13]
In the same manner as in Example 2, [6- {1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl} -3 (4H) -oxo-2H-1 , 4-Benzoxazin-4-yl] acetonitrile as a yellow solid (100 mg, 30%).

[6−{1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル}−3(4H)−オキソ−2H−1,4−ベンゾオキサジン−4−イル]アセトニトリルの融点(mp)及びNMRの測定結果を以下に示す。   [6- {1-Methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl} -3 (4H) -oxo-2H-1,4-benzoxazine-4- Il] Melting point (mp) of acetonitrile and NMR measurement results are shown below.

mp:178〜181℃
1H−NMR(CDCl3,TMS,ppm):δ3.74(q,JHF=1.3Hz,3H)、4.77(s,2H)、4.82(s,2H)、6.91(d,J=1.8Hz,1H)、7.04(dd,J=1.8 and 8.3Hz,1H)、7.14(d,J=8.3Hz,1H)
[実施例14]
実施例2と同様にして、[6−{1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル}−3(4H)−オキソ−2H−1,4−ベンゾオキサジン−4−イル]酢酸メチル(211mg,61%)を得た。
mp: 178-181 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 3.74 (q, J HF = 1.3 Hz, 3H), 4.77 (s, 2H), 4.82 (s, 2H), 6.91 (D, J = 1.8 Hz, 1H), 7.04 (dd, J = 1.8 and 8.3 Hz, 1H), 7.14 (d, J = 8.3 Hz, 1H)
[Example 14]
In the same manner as in Example 2, [6- {1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl} -3 (4H) -oxo-2H-1 , 4-Benzoxazin-4-yl] methyl acetate (211 mg, 61%) was obtained.

[6−{1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル}−3(4H)−オキソ−2H−1,4−ベンゾオキサジン−4−イル]酢酸メチルの融点(mp)及びNMRの測定結果を以下に示す。   [6- {1-Methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl} -3 (4H) -oxo-2H-1,4-benzoxazine-4- Il] Melting point (mp) of methyl acetate and NMR measurement results are shown below.

mp:148〜151℃
1H−NMR(CDCl3,TMS,ppm):δ3.71(q,JHF=1.3Hz,3H)、3.75(s,3H)、4.66(s,2H)、4.75(s,2H)、6.68(d,J=1.8Hz,1H)、6.95(dd,J=1.8 and 8.3Hz,1H)、7.09(d,J=8.3Hz,1H)
[実施例15]
実施例2と同様にして、[6−{1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル}−3(4H)−オキソ−2H−1,4−ベンゾオキサジン−4−イル]酢酸アリルの白色固体(149mg,40%)を得た。
mp: 148-151 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 3.71 (q, J HF = 1.3 Hz, 3H), 3.75 (s, 3H), 4.66 (s, 2H), 4.75 (S, 2H), 6.68 (d, J = 1.8 Hz, 1H), 6.95 (dd, J = 1.8 and 8.3 Hz, 1H), 7.09 (d, J = 8. 3Hz, 1H)
[Example 15]
In the same manner as in Example 2, [6- {1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl} -3 (4H) -oxo-2H-1 , 4-Benzoxazin-4-yl] allyl acetate white solid (149 mg, 40%) was obtained.

[6−{1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル}−3(4H)−オキソ−2H−1,4−ベンゾオキサジン−4−イル]酢酸アリルの融点(mp)及びNMRの測定結果を以下に示す。   [6- {1-Methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl} -3 (4H) -oxo-2H-1,4-benzoxazine-4- Il] Melting point (mp) of allyl acetate and NMR measurement results are shown below.

mp:124〜126℃
1H−NMR(CDCl3,TMS,ppm):δ3.72(q,JHF=1.5Hz,3H)、4.63〜4.68(m,4H)、4.75(s,2H)、5.21〜5.32(m,2H)、5.79〜5.94(m,1H)、6.68(d,J=1.8Hz,1H)、6.95(dd,J=1.8 and 8.3Hz,1H)、7.09(d,J=8.3Hz,1H)
[実施例16]
実施例2と同様にして、[6−{1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル}−3(4H)−オキソ−2H−1,4−ベンゾオキサジン−4−イル]酢酸イソプロピルの白色固体(190mg,51%)を得た。
mp: 124-126 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 3.72 (q, J HF = 1.5 Hz, 3H), 4.63 to 4.68 (m, 4H), 4.75 (s, 2H) 5.21 to 5.32 (m, 2H), 5.79 to 5.94 (m, 1H), 6.68 (d, J = 1.8 Hz, 1H), 6.95 (dd, J = 1.8 and 8.3 Hz, 1H), 7.09 (d, J = 8.3 Hz, 1H)
[Example 16]
In the same manner as in Example 2, [6- {1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl} -3 (4H) -oxo-2H-1 , 4-Benzoxazin-4-yl] isopropyl acetate white solid (190 mg, 51%) was obtained.

[6−{1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル}−3(4H)−オキソ−2H−1,4−ベンゾオキサジン−4−イル]酢酸イソプロピルの融点(mp)及びNMRの測定結果を以下に示す。   [6- {1-Methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl} -3 (4H) -oxo-2H-1,4-benzoxazine-4- Il] Melting point (mp) of isopropyl acetate and NMR measurement results are shown below.

mp:188〜191℃
1H−NMR(CDCl3,TMS,ppm):δ1.20(d,J=6.3Hz,6H)、3.71(q,JHF=1.3Hz,3H)、4.61(s,2H)、4.74(s,2H)、5.00(sept,J=6.3Hz,1H)、6.68(d,J=1.8Hz,1H)、6.95(dd,J=1.8 and 8.3Hz,1H)、7.08(d,J=8.3Hz,1H)
[実施例17]
mp: 188-191 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 1.20 (d, J = 6.3 Hz, 6H), 3.71 (q, J HF = 1.3 Hz, 3H), 4.61 (s, 2H), 4.74 (s, 2H), 5.00 (sept, J = 6.3 Hz, 1H), 6.68 (d, J = 1.8 Hz, 1H), 6.95 (dd, J = 1.8 and 8.3 Hz, 1H), 7.08 (d, J = 8.3 Hz, 1H)
[Example 17]

Figure 2009137851
Figure 2009137851

水素化ナトリウム(40.8mg,1.02mmol)とDMF(5ml)との懸濁液を0℃に冷却し、6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オン(400mg,1.02mmol)のDMF(7ml)溶液を滴下した。滴下終了後、クロロ酢酸tert−ブチル(184mg,1.22mmol)を加え、徐々に室温まで昇温させ24時間撹拌した。反応終了後、反応溶液に1N−塩酸(30ml)を加え、酢酸エチル(30ml×2)で抽出した。有機層を水(30ml)で洗浄し、無水硫酸マグネシウムで乾燥した後、乾燥剤を濾別し溶媒を減圧留去した。残渣をシリカゲルカラムクロマトグラフィー(ヘキサン:酢酸エチル=3:1(体積比))で精製することにより、[6−{1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル}−3(4H)−オキソ−2H−1,4−ベンゾオキサジン−4−イル]酢酸−tert−ブチルの白色固体(333mg,64%)を得た。   A suspension of sodium hydride (40.8 mg, 1.02 mmol) and DMF (5 ml) was cooled to 0 ° C. and 6- [1-methyl-6 (1H) -oxo-2,4-bis (tri Fluoromethyl) pyrimidin-5-yl] -2H-1,4-benzoxazin-3 (4H) -one (400 mg, 1.02 mmol) in DMF (7 ml) was added dropwise. After completion of the dropwise addition, tert-butyl chloroacetate (184 mg, 1.22 mmol) was added, and the temperature was gradually raised to room temperature and stirred for 24 hours. After completion of the reaction, 1N hydrochloric acid (30 ml) was added to the reaction solution, and the mixture was extracted with ethyl acetate (30 ml × 2). The organic layer was washed with water (30 ml) and dried over anhydrous magnesium sulfate, the desiccant was filtered off, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (hexane: ethyl acetate = 3: 1 (volume ratio)) to give [6- {1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl ) Pyrimidin-5-yl} -3 (4H) -oxo-2H-1,4-benzoxazin-4-yl] acetic acid-tert-butyl white solid (333 mg, 64%) was obtained.

[6−{1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル}−3(4H)−オキソ−2H−1,4−ベンゾオキサジン−4−イル]酢酸−tert−ブチルの融点(mp)及びNMRの測定結果を以下に示す。   [6- {1-Methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl} -3 (4H) -oxo-2H-1,4-benzoxazine-4- Il] Melting point (mp) of acetic acid-tert-butyl and NMR measurement results are shown below.

mp:146〜150℃
1H−NMR(CDCl3,TMS,ppm):δ1.42(s,9H)、3.71(q,JHF=1.5Hz,3H)、4.54(s,2H)、4.72(s,2H)、6.72(d,J=1.8Hz,1H)、6.94(dd,J=1.8 and 8.3Hz,1H)、7.08(d,J=8.3Hz,1H)
[実施例18]
実施例2と同様にして、[6−{1−メチル−6(1H)−オキソ−2,4−ビス(ト
リフルオロメチル)ピリミジン−5−イル}−3(4H)−オキソ−2H−1,4−ベンゾオキサジン−4−イル]酢酸2−メトキシエチルの白色固体(244mg,63%)を得た。
mp: 146-150 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 1.42 (s, 9H), 3.71 (q, J HF = 1.5 Hz, 3H), 4.54 (s, 2H), 4.72 (S, 2H), 6.72 (d, J = 1.8 Hz, 1H), 6.94 (dd, J = 1.8 and 8.3 Hz, 1H), 7.08 (d, J = 8. 3Hz, 1H)
[Example 18]
In the same manner as in Example 2, [6- {1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl} -3 (4H) -oxo-2H-1 , 4-Benzoxazin-4-yl] acetic acid 2-methoxyethyl white solid (244 mg, 63%) was obtained.

[6−{1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル}−3(4H)−オキソ−2H−1,4−ベンゾオキサジン−4−イル]酢酸2−メトキシエチルの融点(mp)及びNMRの測定結果を以下に示す。   [6- {1-Methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl} -3 (4H) -oxo-2H-1,4-benzoxazine-4- Il] Melting point (mp) of 2-methoxyethyl acetate and NMR measurement results are shown below.

mp:111〜113℃
1H−NMR(CDCl3,TMS,ppm):δ3.33(s,3H)、3.56(t,J=4.8Hz,2H)、3.72(q,JHF=1.3Hz,3H)、4.29(t,J=4.8Hz,2H)、4.69(s,2H)、4.74(s,2H)、6.70(d,J=2.5Hz,1H)、6.95(dd,J=2.5 and 10Hz,1H)、7.08(d,J=10Hz,1H)
[実施例19]
mp: 111-113 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 3.33 (s, 3H), 3.56 (t, J = 4.8 Hz, 2H), 3.72 (q, J HF = 1.3 Hz) 3H), 4.29 (t, J = 4.8 Hz, 2H), 4.69 (s, 2H), 4.74 (s, 2H), 6.70 (d, J = 2.5 Hz, 1H) 6.95 (dd, J = 2.5 and 10 Hz, 1H), 7.08 (d, J = 10 Hz, 1H)
[Example 19]

Figure 2009137851
Figure 2009137851

水素化ナトリウム(30.5mg,0.77mmol)とDMF(5ml)との懸濁液を0℃に冷却し、6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オン(300mg,0.77mmol)のDMF(7ml)溶液を滴下した。滴下終了後、N−ブチル−2−クロロ酢酸アミド(228mg,1.53mmol)を加え、徐々に室温まで昇温させ24時間撹拌した。反応終了後、反応混合物に1N−塩酸(30ml)を加え、酢酸エチル(30ml×2)で抽出した。有機層を水(30ml)で洗浄し、無水硫酸マグネシウムで乾燥した後、乾燥剤を濾別し溶媒を減圧留去した。残渣をシリカゲルカラムクロマトグラフィー(ヘキサン:酢酸エチル=3:1(体積比))で精製することにより、N−ブチル−[6−{1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル}−3(4H)−オキソ−2H−1,4−ベンゾオキサジン−4−イル]酢酸アミドの白色固体(29mg,8%)を得た。   A suspension of sodium hydride (30.5 mg, 0.77 mmol) and DMF (5 ml) was cooled to 0 ° C. and 6- [1-methyl-6 (1H) -oxo-2,4-bis (tri A solution of fluoromethyl) pyrimidin-5-yl] -2H-1,4-benzoxazin-3 (4H) -one (300 mg, 0.77 mmol) in DMF (7 ml) was added dropwise. After completion of the dropwise addition, N-butyl-2-chloroacetamide (228 mg, 1.53 mmol) was added, and the temperature was gradually raised to room temperature and stirred for 24 hours. After completion of the reaction, 1N-hydrochloric acid (30 ml) was added to the reaction mixture, and the mixture was extracted with ethyl acetate (30 ml × 2). The organic layer was washed with water (30 ml) and dried over anhydrous magnesium sulfate, the desiccant was filtered off, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (hexane: ethyl acetate = 3: 1 (volume ratio)) to give N-butyl- [6- {1-methyl-6 (1H) -oxo-2,4-bis A white solid (29 mg, 8%) of (trifluoromethyl) pyrimidin-5-yl} -3 (4H) -oxo-2H-1,4-benzoxazin-4-yl] acetamide was obtained.

N−ブチル−[6−{1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル}−3(4H)−オキソ−2H−1,4−ベンゾオキサジン−4−イル]酢酸アミドの融点(mp)及びNMRの測定結果を以下に示す。   N-butyl- [6- {1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl} -3 (4H) -oxo-2H-1,4-benzo The melting point (mp) and NMR measurement results of oxazin-4-yl] acetamide are shown below.

mp:223〜224℃
1H−NMR(CDCl3,TMS,ppm):δ0.85(t,J=7.5Hz,3H)、1.20(tq,J=7.5 and 7.5Hz,2H)、1.32(tt,J=7.5 and 7.5Hz,2H)、3.17(dt,J=7.5 and 7.5Hz,2H)、3.71(q,JHF=1.5Hz,3H)、4.49(s,2H)、4.75(s,2H)、6.12(t,J=7.5Hz,1H)、6.96(dd,J=2.5
and 7.5Hz,1H)、7.08(d,J=7.5Hz,1H)、7.14(d,J=2.5Hz,1H)
[実施例20]
実施例2と同様にして、N−フェニル−[6−{1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル}−3(4H)−オキソ−2H−1,4−ベンゾオキサジン−4−イル]酢酸アミドの白色固体(57.8mg,14%)を得た。
mp: 223-224 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 0.85 (t, J = 7.5 Hz, 3H), 1.20 (tq, J = 7.5 and 7.5 Hz, 2H), 1.32 (Tt, J = 7.5 and 7.5 Hz, 2H), 3.17 (dt, J = 7.5 and 7.5 Hz, 2H), 3.71 (q, J HF = 1.5 Hz, 3H) 4.49 (s, 2H), 4.75 (s, 2H), 6.12 (t, J = 7.5 Hz, 1H), 6.96 (dd, J = 2.5)
and 7.5 Hz, 1H), 7.08 (d, J = 7.5 Hz, 1H), 7.14 (d, J = 2.5 Hz, 1H)
[Example 20]
In the same manner as in Example 2, N-phenyl- [6- {1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl} -3 (4H) -oxo -2H-1,4-benzoxazin-4-yl] acetic acid amide was obtained as a white solid (57.8 mg, 14%).

N−フェニル−[6−{1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル}−3(4H)−オキソ−2H−1,4−ベンゾオキサジン−4−イル]酢酸アミドの融点(mp)及びNMRの測定結果を以下に示す。   N-phenyl- [6- {1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl} -3 (4H) -oxo-2H-1,4-benzo The melting point (mp) and NMR measurement results of oxazin-4-yl] acetamide are shown below.

mp:264〜268℃
1H−NMR(CDCl3,TMS,ppm):δ3.71(q,JHF=1.0Hz,3H)、4.62(s,2H)、4.79(s,2H)、6.99〜7.47(m,8H)、8.24(s,1H)
[実施例21]
mp: 264-268 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 3.71 (q, J HF = 1.0 Hz, 3H), 4.62 (s, 2H), 4.79 (s, 2H), 6.99 ˜7.47 (m, 8H), 8.24 (s, 1H)
[Example 21]

Figure 2009137851
Figure 2009137851

水素化ナトリウム(51mg,1.27mmol)とDMF(5ml)との懸濁液を0℃に冷却し、6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オン(300mg,0.77mmol)のDMF(7ml)溶液を滴下した。滴下終了後、クロロメチルエチルエーテル(144mg,1.90mmol)を加え、徐々に室温まで昇温させ24時間撹拌した。反応終了後、反応溶液に1N−塩酸(30ml)を加え、酢酸エチル(30ml×2)で抽出した。有機層を水(30ml)で洗浄し、無水硫酸マグネシウムで乾燥した後、乾燥剤を濾別し溶媒を減圧留去した。残渣をシリカゲルカラムクロマトグラフィー(ヘキサン:酢酸エチル=3:1(体積比))で精製することにより、4−エトキシメチル−6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オンの白色固体(402mg,70%)を得た。   A suspension of sodium hydride (51 mg, 1.27 mmol) and DMF (5 ml) was cooled to 0 ° C. and 6- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) was cooled. ) Pyrimidin-5-yl] -2H-1,4-benzoxazin-3 (4H) -one (300 mg, 0.77 mmol) in DMF (7 ml) was added dropwise. After completion of the dropwise addition, chloromethyl ethyl ether (144 mg, 1.90 mmol) was added, and the temperature was gradually raised to room temperature and stirred for 24 hours. After completion of the reaction, 1N hydrochloric acid (30 ml) was added to the reaction solution, and the mixture was extracted with ethyl acetate (30 ml × 2). The organic layer was washed with water (30 ml) and dried over anhydrous magnesium sulfate, the desiccant was filtered off, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (hexane: ethyl acetate = 3: 1 (volume ratio)) to give 4-ethoxymethyl-6- [1-methyl-6 (1H) -oxo-2,4-bis. A white solid (402 mg, 70%) of (trifluoromethyl) pyrimidin-5-yl] -2H-1,4-benzoxazin-3 (4H) -one was obtained.

4−エトキシメチル−6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オンの融点(mp)及びNMRの測定結果を以下に示す。   4-Ethoxymethyl-6- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -2H-1,4-benzoxazine-3 (4H)- ON melting point (mp) and NMR measurement results are shown below.

mp:115〜117℃
1H−NMR(CDCl3,TMS,ppm):δ1.16(t,J=7.0Hz,3H)、3.57(q,J=7.0Hz,2H)、3.72(q,JHF=1.5Hz,3H)、4.69(s,2H)、5.34(s,2H)、7.00(dd,J=1.8 and
8.3Hz,1H)、7.06(d,J=8.3Hz,1H)、7.29(d,J=1.8Hz,1H)
[実施例22]
mp: 115-117 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 1.16 (t, J = 7.0 Hz, 3H), 3.57 (q, J = 7.0 Hz, 2H), 3.72 (q, J HF = 1.5 Hz, 3H), 4.69 (s, 2H), 5.34 (s, 2H), 7.00 (dd, J = 1.8 and)
8.3 Hz, 1H), 7.06 (d, J = 8.3 Hz, 1H), 7.29 (d, J = 1.8 Hz, 1H)
[Example 22]

Figure 2009137851
Figure 2009137851

6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オン(300mg,0.77mmol)のアセトニトリル(12ml)溶液に3−ブロモ−2−(メトキシイミノ)プロピオン酸エチル(342mg,1.53mmol)と炭酸カリウム(158mg,1.14mmol)とを加え、6時間加熱還流した。反応終了後、反応混合物に1N−塩酸(30ml)を加え、酢酸エチル(30ml×2)で抽出した。有機層を水(30ml)で洗浄し、無水硫酸マグネシウムで乾燥した後、乾燥剤を濾別し溶媒を減圧留去した。残渣をシリカゲルカラムクロマトグラフィー(ヘキサン:酢酸エチル=3:1(体積比))の後、プレパラティブ薄層クロマトグラフィー(クロロホルム100%)で精製することにより、3−[6−{1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル}−3(4H)−オキソ−2H−1,4−ベンゾオキサジン−4−イル]−2−(メトキシイミノ)プロピオン酸エチルの黄色液体(239mg,59%)を得た。   6- [1-Methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -2H-1,4-benzoxazin-3 (4H) -one (300 mg, 0 .77 mmol) in acetonitrile (12 ml) was added ethyl 3-bromo-2- (methoxyimino) propionate (342 mg, 1.53 mmol) and potassium carbonate (158 mg, 1.14 mmol), and the mixture was heated to reflux for 6 hours. After completion of the reaction, 1N-hydrochloric acid (30 ml) was added to the reaction mixture, and the mixture was extracted with ethyl acetate (30 ml × 2). The organic layer was washed with water (30 ml) and dried over anhydrous magnesium sulfate, the desiccant was filtered off, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (hexane: ethyl acetate = 3: 1 (volume ratio)) followed by preparative thin layer chromatography (chloroform 100%) to give 3- [6- {1-methyl- 6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl} -3 (4H) -oxo-2H-1,4-benzoxazin-4-yl] -2- (methoxyimino ) A yellow liquid (239 mg, 59%) of ethyl propionate was obtained.

3−[6−{1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル}−3(4H)−オキソ−2H−1,4−ベンゾオキサジン−4−イル]−2−(メトキシイミノ)プロピオン酸エチルのNMRの測定結果を以下に示す。   3- [6- {1-Methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl} -3 (4H) -oxo-2H-1,4-benzoxazine- The NMR measurement results of ethyl 4-yl] -2- (methoxyimino) propionate are shown below.

1H−NMR(CDCl3,TMS,ppm):δ1.23(t,J=7.0Hz,3H)、3.72(q,JHF=1.3Hz,3H)、4.03(s,3H)、4.23(q,J=7.0Hz,2H)、4.67(s,2H)、4.93(s,2H)、6.88(d,J=1.8Hz,1H)、6.90(dd,J=1.8 and 8.3Hz,1H)、7.05(d,J=8.3Hz,1H)
[実施例23]
1 H-NMR (CDCl 3 , TMS, ppm): δ 1.23 (t, J = 7.0 Hz, 3H), 3.72 (q, J HF = 1.3 Hz, 3H), 4.03 (s, 3H), 4.23 (q, J = 7.0 Hz, 2H), 4.67 (s, 2H), 4.93 (s, 2H), 6.88 (d, J = 1.8 Hz, 1H) 6.90 (dd, J = 1.8 and 8.3 Hz, 1H), 7.05 (d, J = 8.3 Hz, 1H)
[Example 23]

Figure 2009137851
Figure 2009137851

水素化ナトリウム(40.8mg,1.02mmol)をDMF(5ml)に加え0℃に冷却した後、6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オン(400mg,1.02mmol)のDMF(7ml)溶液を滴下した。滴下終了後、2−クロロエチル(クロロメチル)エーテル(158mg,1.22mmol)を加え、徐々に室温まで昇温させ24時間撹拌した。反応終了後、反応混合物に1N−塩酸(30ml)を加え、酢酸エチル(30ml×2)で抽出した。有機層を水(30ml)で洗浄し、
無水硫酸マグネシウムで乾燥した後、乾燥剤を濾別し溶媒を減圧留去した。残渣をシリカゲルカラムクロマトグラフィー(ヘキサン:酢酸エチル=3:1(体積比))で精製することにより、4−(2−クロロエトキシメチル)−6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オンの黄色液体(240mg,48%)を得た。
Sodium hydride (40.8 mg, 1.02 mmol) was added to DMF (5 ml), cooled to 0 ° C., and then 6- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl). A solution of pyrimidin-5-yl] -2H-1,4-benzoxazin-3 (4H) -one (400 mg, 1.02 mmol) in DMF (7 ml) was added dropwise. 2-Chloroethyl (chloromethyl) ether (158 mg, 1.22 mmol) was added after completion | finish of dripping, and it heated up gradually to room temperature, and stirred for 24 hours. After completion of the reaction, 1N-hydrochloric acid (30 ml) was added to the reaction mixture, and the mixture was extracted with ethyl acetate (30 ml × 2). The organic layer is washed with water (30 ml)
After drying over anhydrous magnesium sulfate, the desiccant was filtered off and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (hexane: ethyl acetate = 3: 1 (volume ratio)) to give 4- (2-chloroethoxymethyl) -6- [1-methyl-6 (1H) -oxo- A yellow liquid (240 mg, 48%) of 2,4-bis (trifluoromethyl) pyrimidin-5-yl] -2H-1,4-benzoxazin-3 (4H) -one was obtained.

4−(2−クロロエトキシメチル)−6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾオキサジン−3(4H)−オンの融点(mp)及びNMRの測定結果を以下に示す。   4- (2-Chloroethoxymethyl) -6- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -2H-1,4-benzoxazine- The melting point (mp) of 3 (4H) -one and the measurement results of NMR are shown below.

mp:111〜113℃
1H−NMR(CDCl3,TMS,ppm):δ3.58(t,J=5.5Hz,2H)、3.72(q,JHF=1.5Hz,3H)、3.83(t,J=5.5Hz,2H)、4.70(s,2H)、5.40(s,2H)、6.98(dd,J=1.8 and
8.3Hz,1H)、7.07(d,J=8.3Hz,1H)、7.29(d,J=1.8Hz,1H)
[実施例24]
mp: 111-113 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 3.58 (t, J = 5.5 Hz, 2H), 3.72 (q, J HF = 1.5 Hz, 3H), 3.83 (t, J = 5.5 Hz, 2H), 4.70 (s, 2H), 5.40 (s, 2H), 6.98 (dd, J = 1.8 and)
8.3 Hz, 1 H), 7.07 (d, J = 8.3 Hz, 1 H), 7.29 (d, J = 1.8 Hz, 1 H)
[Example 24]

Figure 2009137851
Figure 2009137851

[6−{1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル}−3(4H)−オキソ−2H−1,4−ベンゾオキサジン−4−イル]酢酸−tert−ブチル(150mg,0.30mmol)のクロロホルム(5ml)溶液にトリフルオロ酢酸(1ml)を加え1時間加熱還流した。反応終了後、反応混合物に酢酸エチル(30ml)と水(30ml)とを加えて抽出した。有機層を水(30ml×3)で洗浄し、硫酸マグネシウムで乾燥した後、乾燥剤を濾別し溶媒を減圧留去することで、[6−{1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル}−3(4H)−オキソ−2H−1,4−ベンゾオキサジン−4−イル]酢酸の白色固体(124mg,92%)を得た。   [6- {1-Methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl} -3 (4H) -oxo-2H-1,4-benzoxazine-4- Yl] acetic acid-tert-butyl (150 mg, 0.30 mmol) in chloroform (5 ml) was added trifluoroacetic acid (1 ml) and heated to reflux for 1 hour. After completion of the reaction, the reaction mixture was extracted with ethyl acetate (30 ml) and water (30 ml). The organic layer was washed with water (30 ml × 3) and dried over magnesium sulfate, and then the desiccant was filtered off and the solvent was removed under reduced pressure to give [6- {1-methyl-6 (1H) -oxo- A white solid (124 mg, 92%) of 2,4-bis (trifluoromethyl) pyrimidin-5-yl} -3 (4H) -oxo-2H-1,4-benzoxazin-4-yl] acetic acid was obtained. .

[6−{1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル}−3(4H)−オキソ−2H−1,4−ベンゾオキサジン−4−イル]酢酸の融点(mp)及びNMRの測定結果を以下に示す。   [6- {1-Methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl} -3 (4H) -oxo-2H-1,4-benzoxazine-4- Il] Melting point (mp) of acetic acid and NMR measurement results are shown below.

mp:107〜110℃
1H−NMR(CDCl3,TMS,ppm):3.72(q,JhF=1.5Hz,3H)、4.71(s,2H)、4.75(s,2H)、6.72(d,J=2.5Hz,1H)、6.99(dd,J=2.5 and 7.5Hz,1H)、7.10(d,J=7.5Hz,1H)
[実施例25]
mp: 107-110 ° C
1 H-NMR (CDCl 3 , TMS, ppm): 3.72 (q, J hF = 1.5 Hz, 3H), 4.71 (s, 2H), 4.75 (s, 2H), 6.72 (D, J = 2.5 Hz, 1H), 6.99 (dd, J = 2.5 and 7.5 Hz, 1H), 7.10 (d, J = 7.5 Hz, 1H)
[Example 25]

Figure 2009137851
Figure 2009137851

4−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2−ニトロフェニルチオ酢酸エチル(896mg,1.85mmol)の酢酸(50ml)溶液に還元鉄(5g)を加え、6時間加熱還流した。反応終了後、固体を濾別し、濾液に水(150ml)を加え、酢酸エチル(200ml×2)で抽出した。有機層を水(180ml)で洗浄し、無水硫酸マグネシウムで乾燥した後、乾燥剤を濾過し溶媒を減圧留去した。残渣をシリカゲルカラムクロマトグラフィー(ヘキサン:酢酸エチル=1:1(体積比))で精製することによって、6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾチアジン−3(4H)−オンの黄色固体(139mg,18%)を得た。   Ethyl 4- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -2-nitrophenylthioacetate (896 mg, 1.85 mmol) in acetic acid (50 ml) Reduced iron (5 g) was added to the solution and heated to reflux for 6 hours. After completion of the reaction, the solid was filtered off, water (150 ml) was added to the filtrate, and the mixture was extracted with ethyl acetate (200 ml × 2). The organic layer was washed with water (180 ml) and dried over anhydrous magnesium sulfate, then the desiccant was filtered and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (hexane: ethyl acetate = 1: 1 (volume ratio)) to give 6- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl). A yellow solid (139 mg, 18%) of pyrimidin-5-yl] -2H-1,4-benzothiazin-3 (4H) -one was obtained.

6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾチアジン−3(4H)−オンの融点(mp)及びNMRの測定結果を以下に示す。   Melting point of 6- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -2H-1,4-benzothiazin-3 (4H) -one (mp) And the measurement result of NMR is shown below.

mp:152〜156℃
1H−NMR(CDCl3,TMS,ppm):δ3.46(s,2H)、3.73(q,JHF=1.3Hz,3H)、6.80(d,J=2.5Hz,1H)、6.93(dd,J=2.5 and 8.9Hz,1H)、7.40(d,J=8.0Hz,1H),8.89(brs,1H)
[実施例26]
mp: 152-156 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 3.46 (s, 2H), 3.73 (q, J HF = 1.3 Hz, 3H), 6.80 (d, J = 2.5 Hz, 1H), 6.93 (dd, J = 2.5 and 8.9 Hz, 1H), 7.40 (d, J = 8.0 Hz, 1H), 8.89 (brs, 1H)
[Example 26]

Figure 2009137851
Figure 2009137851

6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2H−1,4−ベンゾチアジン−3(4H)−オン(415mg,1.01mmol)のアセトニトリル(5ml)溶液にプロパルギルブロミド(0.13ml,1.52mmol)と炭酸カリウム(210mg,1.52mmol)とを加え,6時間加熱還流した。反応終了後、反応混合物に1N−塩酸(30ml)を加え、酢酸エチル(40ml×2)で抽出した。有機層を水(40ml)で洗浄し、無水硫酸マグネシウムで乾燥した後、乾燥剤を濾別し溶媒を減圧留去した。残渣をシリカゲルカラムクロマトグラフィー(ヘキサン:酢酸エチル=2:1(体積比))で精製することによって、6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−4−プロパルギル−2H−1,4−ベンゾチアジン−3(4H)−オンの淡黄色固体(42mg,9%)を得た。   6- [1-Methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -2H-1,4-benzothiazin-3 (4H) -one (415 mg, 1. (01 mmol) in acetonitrile (5 ml) was added propargyl bromide (0.13 ml, 1.52 mmol) and potassium carbonate (210 mg, 1.52 mmol), and the mixture was heated to reflux for 6 hours. After completion of the reaction, 1N-hydrochloric acid (30 ml) was added to the reaction mixture, and the mixture was extracted with ethyl acetate (40 ml × 2). The organic layer was washed with water (40 ml) and dried over anhydrous magnesium sulfate, the desiccant was filtered off, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (hexane: ethyl acetate = 2: 1 (volume ratio)) to give 6- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl). A pale yellow solid (42 mg, 9%) of pyrimidin-5-yl] -4-propargyl-2H-1,4-benzothiazin-3 (4H) -one was obtained.

6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−4−プロパルギル−2H−1,4−ベンゾチアジン−3(4H)−オンの融点(mp)及びNMRの測定結果を以下に示す。   Of 6- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -4-propargyl-2H-1,4-benzothiazin-3 (4H) -one The melting point (mp) and NMR measurement results are shown below.

mp:70〜74℃
1H−NMR(CDCl3,TMS,ppm):δ2.27(t,J=2.5Hz,1H)、3.50(s,2H)、3.75(q,JHF=1.3Hz,3H)、4.68(d,J=2.5Hz,2H)、7.01(dd,J=1.5 and 8.0Hz,1H)、7.31(d,J=1.5Hz,1H)、6.48(d,J=8.0Hz,1H)
[参考例1]
mp: 70-74 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 2.27 (t, J = 2.5 Hz, 1H), 3.50 (s, 2H), 3.75 (q, J HF = 1.3 Hz, 3H), 4.68 (d, J = 2.5 Hz, 2H), 7.01 (dd, J = 1.5 and 8.0 Hz, 1H), 7.31 (d, J = 1.5 Hz, 1H) ), 6.48 (d, J = 8.0 Hz, 1H)
[Reference Example 1]

Figure 2009137851
Figure 2009137851

ナトリウムエトキシド(12.9g,180mmol)のエタノール(100ml)溶液にトリフルオロアセト酢酸エチル(23.4g,180mmol)、トリフルオロアセトアミジン(16.8g,150mmol)を順次加え、8時間加熱還流した。反応終了後、反応混合物に1N−塩酸(300ml)を加え、酢酸エチル(300ml×2)で抽出した。有機層を水(300ml)で洗浄し、無水硫酸マグネシウムで乾燥した後、溶媒を減圧留去することで固体を析出させた。得られた固体をヘキサンで洗浄し、十分乾燥させることによって、6−ヒドロキシ−2,4−ビス(トリフルオロメチル)−ピリミジンの淡黄色固体(20g,48%)を得た。   To a solution of sodium ethoxide (12.9 g, 180 mmol) in ethanol (100 ml), ethyl trifluoroacetoacetate (23.4 g, 180 mmol) and trifluoroacetamidine (16.8 g, 150 mmol) were sequentially added, and the mixture was heated to reflux for 8 hours. . After completion of the reaction, 1N hydrochloric acid (300 ml) was added to the reaction mixture, and the mixture was extracted with ethyl acetate (300 ml × 2). The organic layer was washed with water (300 ml) and dried over anhydrous magnesium sulfate, and then the solvent was distilled off under reduced pressure to precipitate a solid. The obtained solid was washed with hexane and sufficiently dried to obtain a pale yellow solid (20 g, 48%) of 6-hydroxy-2,4-bis (trifluoromethyl) -pyrimidine.

6−ヒドロキシ−2,4−ビス(トリフルオロメチル)−ピリミジンの融点(mp)及びNMRの測定結果を以下に示す。
mp:108〜109℃
1H−NMR(CDCl3,TMS,ppm):7.11(s,1H)
[参考例2]
Melting point (mp) and NMR measurement results of 6-hydroxy-2,4-bis (trifluoromethyl) -pyrimidine are shown below.
mp: 108-109 ° C
1 H-NMR (CDCl 3 , TMS, ppm): 7.11 (s, 1H)
[Reference Example 2]

Figure 2009137851
Figure 2009137851

N−ブロモこはく酸イミド(30.3g,171mmol)のDMF(200ml)溶液に、6−ヒドロキシ−2,4−ビス(トリフルオロメチル)ピリミジン(36g,155mmol)を加え、80℃で5時間加熱撹拌した。反応終了後、反応混合物に1N−塩酸(600ml)を加え、酢酸エチル(600ml×2)で抽出した。得られた有機層を水(800ml)で洗浄し、無水硫酸マグネシウムで乾燥した後、乾燥剤を濾別し、溶媒を減圧留去することで固体を析出させた。得られた固体をヘキサンで洗浄し、充分乾燥させることにより5−ブロモ−6−ヒドロキシ−2,4−ビス(トリフルオロメチル)ピリミジンの茶色固体(19.9g,41%)を得た。   6-Hydroxy-2,4-bis (trifluoromethyl) pyrimidine (36 g, 155 mmol) was added to a DMF (200 ml) solution of N-bromosuccinimide (30.3 g, 171 mmol) and heated at 80 ° C. for 5 hours. Stir. After completion of the reaction, 1N hydrochloric acid (600 ml) was added to the reaction mixture, and the mixture was extracted with ethyl acetate (600 ml × 2). The obtained organic layer was washed with water (800 ml), dried over anhydrous magnesium sulfate, the desiccant was filtered off, and the solvent was distilled off under reduced pressure to precipitate a solid. The obtained solid was washed with hexane and sufficiently dried to obtain a brown solid (19.9 g, 41%) of 5-bromo-6-hydroxy-2,4-bis (trifluoromethyl) pyrimidine.

5−ブロモ−6−ヒドロキシ−2,4−ビス(トリフルオロメチル)ピリミジンの融点(mp)を以下に示す。
mp:134〜135℃
[参考例3]
参考例1と同様にして、4−ジフルオロメチル−6−ヒドロキシ−2−トリフルオロメチルピリミジンの淡黄色固体(5.46g,66%)を得た。
The melting point (mp) of 5-bromo-6-hydroxy-2,4-bis (trifluoromethyl) pyrimidine is shown below.
mp: 134-135 ° C
[Reference Example 3]
In the same manner as in Reference Example 1, a pale yellow solid (5.46 g, 66%) of 4-difluoromethyl-6-hydroxy-2-trifluoromethylpyrimidine was obtained.

4−ジフルオロメチル−6−ヒドロキシ−2−トリフルオロメチルピリミジンの融点(mp)及びNMRの測定結果を以下に示す。
mp:107〜110℃
1H−NMR(CDCl3,TMS,ppm):6.29(t,JHF=55Hz,1H)、7.02(s,1H)
[参考例4]
参考例2と同様にして、5−ブロモ−4−ジフルオロメチル−6−ヒドロキシ−2−トリフルオロメチルピリミジンの橙色固体(19.3g,76%)を得た。
The melting point (mp) and NMR measurement results of 4-difluoromethyl-6-hydroxy-2-trifluoromethylpyrimidine are shown below.
mp: 107-110 ° C
1 H-NMR (CDCl 3 , TMS, ppm): 6.29 (t, J HF = 55 Hz, 1H), 7.02 (s, 1H)
[Reference Example 4]
In the same manner as in Reference Example 2, an orange solid (19.3 g, 76%) of 5-bromo-4-difluoromethyl-6-hydroxy-2-trifluoromethylpyrimidine was obtained.

5−ブロモ−4−ジフルオロメチル−6−ヒドロキシ−2−トリフルオロメチルピリミジンの融点(mp)及びNMRの測定結果を以下に示す。
mp:126〜128℃
1H−NMR(CDCl3,TMS,ppm):6.63(t,JHF=53Hz,1H)
[参考例5]
The melting point (mp) and NMR measurement results of 5-bromo-4-difluoromethyl-6-hydroxy-2-trifluoromethylpyrimidine are shown below.
mp: 126-128 ° C
1 H-NMR (CDCl 3 , TMS, ppm): 6.63 (t, J HF = 53 Hz, 1H)
[Reference Example 5]

Figure 2009137851
Figure 2009137851

4−フルオロフェニルホウ酸(3.60g,25.7mmol)と5−ブロモ−4−ジフルオロメチル−6−ヒドロキシ−2−トリフルオロメチルピリミジン(5.0g,17.1mmol)とのジメトキシエタン溶液(60ml)にテトラキス(トリフェニルホスフィン)パラジウム(1.49g,1.29mmol)と2M−炭酸セシウム水溶液(21.4ml,42.8mmol)とを室温で加え、6時間加熱還流した。反応終了後、反応混合物に1N−塩酸(180ml)を加え、酢酸エチル(180ml×2)で抽出した。有機層を水(200ml)で洗浄し、無水硫酸マグネシウムで乾燥した後、乾燥剤を濾別し、溶媒を減圧留去した。残渣をシリカゲルカラムクロマトグラフィー(ヘキサン:酢酸エチル=2:1(体積比))で精製することによって、4−ジフルオロメチル−5−(4−フルオロフェニル)−6−ヒドロキシ−2−トリフルオロメチルピリミジンの白色固体(4.73g,90%)を得た。   Dimethoxyethane solution of 4-fluorophenylboric acid (3.60 g, 25.7 mmol) and 5-bromo-4-difluoromethyl-6-hydroxy-2-trifluoromethylpyrimidine (5.0 g, 17.1 mmol) ( 60 ml) were added tetrakis (triphenylphosphine) palladium (1.49 g, 1.29 mmol) and 2M aqueous cesium carbonate solution (21.4 ml, 42.8 mmol) at room temperature and heated to reflux for 6 hours. After completion of the reaction, 1N-hydrochloric acid (180 ml) was added to the reaction mixture, and the mixture was extracted with ethyl acetate (180 ml × 2). The organic layer was washed with water (200 ml) and dried over anhydrous magnesium sulfate, the desiccant was filtered off, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (hexane: ethyl acetate = 2: 1 (volume ratio)) to give 4-difluoromethyl-5- (4-fluorophenyl) -6-hydroxy-2-trifluoromethylpyrimidine Of a white solid (4.73 g, 90%) was obtained.

4−ジフルオロメチル−5−(4−フルオロフェニル)−6−ヒドロキシ−2−トリフルオロメチルピリミジンの融点(mp)及びNMRの測定結果を以下に示す。
mp:182〜185℃
1H−NMR(CDCl3,TMS,ppm):δ6.18(t,JHF=53Hz,1H)、7.13〜7.38(m,4H)
[参考例6]
The melting point (mp) and NMR measurement results of 4-difluoromethyl-5- (4-fluorophenyl) -6-hydroxy-2-trifluoromethylpyrimidine are shown below.
mp: 182-185 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 6.18 (t, J HF = 53 Hz, 1H), 7.13 to 7.38 (m, 4H)
[Reference Example 6]

Figure 2009137851
Figure 2009137851

4−フルオロフェニルホウ酸(7.43g,53.1mmol)と5−ブロモ−6−ヒドロキシ−2,4−ビス(トリフルオロメチル)ピリミジン(11.0g,35.4mmol)とのジメトキシエタン溶液(130ml)にテトラキス(トリフェニルホスフィン)パラジウム(2.05g,1.77mmol)と2M−炭酸ナトリウム水溶液(44ml,88mmol)とを室温で加え、8時間加熱還流した。反応終了後、反応混合物に1N−塩酸(300ml)を加え、酢酸エチル(300ml×2)で抽出した。有機層を水(300ml)で洗浄し、無水硫酸マグネシウムで乾燥した後、乾燥剤を濾別し、溶媒を減圧留去した。残渣をシリカゲルカラムクロマトグラフィー(ヘキサン:酢酸エチル=2:1(体積比))で精製し、更に得られた固体をヘキサンで洗浄し、充分乾燥することによって、5−(4−フルオロフェニル)−6−ヒドロキシ−2,4−ビス(トリフルオロメチル)ピリミジンの白色固体(8.45g,73%)を得た。   Dimethoxyethane solution of 4-fluorophenylboric acid (7.43 g, 53.1 mmol) and 5-bromo-6-hydroxy-2,4-bis (trifluoromethyl) pyrimidine (11.0 g, 35.4 mmol) ( 130 ml) were added tetrakis (triphenylphosphine) palladium (2.05 g, 1.77 mmol) and 2M-sodium carbonate aqueous solution (44 ml, 88 mmol) at room temperature and heated to reflux for 8 hours. After completion of the reaction, 1N hydrochloric acid (300 ml) was added to the reaction mixture, and the mixture was extracted with ethyl acetate (300 ml × 2). The organic layer was washed with water (300 ml) and dried over anhydrous magnesium sulfate, the desiccant was filtered off, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (hexane: ethyl acetate = 2: 1 (volume ratio)), and the obtained solid was washed with hexane and sufficiently dried to give 5- (4-fluorophenyl)- A white solid (8.45 g, 73%) of 6-hydroxy-2,4-bis (trifluoromethyl) pyrimidine was obtained.

5−(4−フルオロフェニル)−6−ヒドロキシ−2,4−ビス(トリフルオロメチル)ピリミジンの融点(mp)及びNMRの測定結果を以下に示す。
mp:153〜154℃
1H−NMR(CDCl3,TMS,ppm):δ7.13〜7.32(m,4H)
[参考例7]
The melting point (mp) and NMR measurement results of 5- (4-fluorophenyl) -6-hydroxy-2,4-bis (trifluoromethyl) pyrimidine are shown below.
mp: 153-154 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 7.13 to 7.32 (m, 4H)
[Reference Example 7]

Figure 2009137851
Figure 2009137851

4−ジフルオロメチル−5−(4−フルオロフェニル)−6−ヒドロキシ−2−トリフルオロメチルピリミジン(4.5g,14.6mmol)のDMF(45ml)溶液にヨウ化メチル(2.08ml,21.9mmol)と炭酸カリウム(3.03g,21.9mmol)とを加え、室温で24時間撹拌した。反応終了後、反応混合物に1N−塩酸(140ml)を加え、酢酸エチル(140ml×2)で抽出した。有機層を水(160ml)で洗浄し、無水硫酸マグネシウムで乾燥した後、乾燥剤を濾別し、溶媒を減圧留去した。残渣をシリカゲルカラムクロマトグラフィー(ヘキサン:酢酸エチル=8:1(体積比))で精製することによって、4−ジフルオロメチル−5−(4−フルオロフェニル)−1−メチル−2−トリフルオロメチルピリミジン−6(1H)−オンの白色固体(1.67g,37%)、及び4−ジフルオロメチル−5−(4−フルオロフェニル)−6−メトキシ−2−トリフルオロメチルピリミジンの白色固体(2.66g,56%)を得た。   To a solution of 4-difluoromethyl-5- (4-fluorophenyl) -6-hydroxy-2-trifluoromethylpyrimidine (4.5 g, 14.6 mmol) in DMF (45 ml), methyl iodide (2.08 ml, 21. 9 mmol) and potassium carbonate (3.03 g, 21.9 mmol) were added, and the mixture was stirred at room temperature for 24 hours. After completion of the reaction, 1N hydrochloric acid (140 ml) was added to the reaction mixture, and the mixture was extracted with ethyl acetate (140 ml × 2). The organic layer was washed with water (160 ml) and dried over anhydrous magnesium sulfate, the desiccant was filtered off, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (hexane: ethyl acetate = 8: 1 (volume ratio)) to give 4-difluoromethyl-5- (4-fluorophenyl) -1-methyl-2-trifluoromethylpyrimidine -6 (1H) -one white solid (1.67 g, 37%) and 4-difluoromethyl-5- (4-fluorophenyl) -6-methoxy-2-trifluoromethylpyrimidine white solid (2. 66 g, 56%).

4−ジフルオロメチル−5−(4−フルオロフェニル)−1−メチル−2−トリフルオロメチルピリミジン−6(1H)−オン及び4−ジフルオロメチル−5−(4−フルオロフェニル)−6−メトキシ−2−トリフルオロメチルピリミジンの融点(mp)及びNMRの測定結果を以下に示す。   4-Difluoromethyl-5- (4-fluorophenyl) -1-methyl-2-trifluoromethylpyrimidin-6 (1H) -one and 4-difluoromethyl-5- (4-fluorophenyl) -6-methoxy- The melting point (mp) and NMR measurement results of 2-trifluoromethylpyrimidine are shown below.

4−ジフルオロメチル−5−(4−フルオロフェニル)−1−メチル−2−トリフルオロメチルピリミジン−6(1H)−オン;
mp:136〜139℃
1H−NMR(CDCl3,TMS,ppm):3.72(q,JHF=1.3Hz,3H
)、6.09(t,JHF=54Hz,1H)、7.16〜7.39(m,4H)
4−ジフルオロメチル−5−(4−フルオロフェニル)−6−メトキシ−2−トリフルオロメチルピリミジン;
mp:83〜85℃
1H−NMR(CDCl3,TMS,ppm):δ4.07(s,3H)、6.22(t,JHF=55Hz,1H)、7.14〜7.34(m,4H)
[参考例8]
4-difluoromethyl-5- (4-fluorophenyl) -1-methyl-2-trifluoromethylpyrimidin-6 (1H) -one;
mp: 136-139 ° C
1 H-NMR (CDCl 3 , TMS, ppm): 3.72 (q, J HF = 1.3 Hz, 3H
), 6.09 (t, J HF = 54 Hz, 1H), 7.16-7.39 (m, 4H)
4-difluoromethyl-5- (4-fluorophenyl) -6-methoxy-2-trifluoromethylpyrimidine;
mp: 83-85 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 4.07 (s, 3H), 6.22 (t, J HF = 55 Hz, 1 H), 7.14 to 7.34 (m, 4H)
[Reference Example 8]

Figure 2009137851
Figure 2009137851

5−(4−フルオロフェニル)−6−ヒドロキシ−2,4−ビス(トリフルオロメチル)ピリミジン(11.8g,38.3mmol)のDMF(120ml)溶液にヨウ化メチル(5.5ml,56.5mmol)と炭酸カリウム(7.95g,57.5mmol)とを加え、室温で24時間撹拌した。反応終了後、反応混合物に1N−塩酸(400ml)を加え、酢酸エチル(400ml×2)で抽出した。有機層を水(400ml)で洗浄し、無水硫酸マグネシウムで乾燥した後、乾燥剤を濾別し、溶媒を減圧留去した。残渣をシリカゲルカラムクロマトグラフィー(ヘキサン:酢酸エチル=8:1(体積比))で精製することによって、5−(4−フルオロフェニル)−1−メチル−2,4−ビス(トリフルオロメチル)ピリミジン−6(1H)−オンの白色固体(2.83g,22%)、及び5−(4−フルオロフェニル)−6−メトキシ−2,4−ビス(トリフルオロメチル)ピリミジンの白色固体(5.74g,47%)を得た。   To a solution of 5- (4-fluorophenyl) -6-hydroxy-2,4-bis (trifluoromethyl) pyrimidine (11.8 g, 38.3 mmol) in DMF (120 ml), methyl iodide (5.5 ml, 56. 5 mmol) and potassium carbonate (7.95 g, 57.5 mmol) were added, and the mixture was stirred at room temperature for 24 hours. After completion of the reaction, 1N hydrochloric acid (400 ml) was added to the reaction mixture, and the mixture was extracted with ethyl acetate (400 ml × 2). The organic layer was washed with water (400 ml) and dried over anhydrous magnesium sulfate, the desiccant was filtered off, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (hexane: ethyl acetate = 8: 1 (volume ratio)) to give 5- (4-fluorophenyl) -1-methyl-2,4-bis (trifluoromethyl) pyrimidine -6 (1H) -one white solid (2.83 g, 22%) and 5- (4-fluorophenyl) -6-methoxy-2,4-bis (trifluoromethyl) pyrimidine white solid (5. 74 g, 47%).

5−(4−フルオロフェニル)−1−メチル−2,4−ビス(トリフルオロメチル)ピリミジン−6(1H)−オン及び5−(4−フルオロフェニル)−6−メトキシ−2,4−ビス(トリフルオロメチル)ピリミジンの融点(mp)及びNMRの測定結果を以下に示す。   5- (4-Fluorophenyl) -1-methyl-2,4-bis (trifluoromethyl) pyrimidin-6 (1H) -one and 5- (4-fluorophenyl) -6-methoxy-2,4-bis The melting point (mp) and NMR measurement results of (trifluoromethyl) pyrimidine are shown below.

5−(4−フルオロフェニル)−1−メチル−2,4−ビス(トリフルオロメチル)ピ
リミジン−6(1H)−オン;
mp:90〜91℃
1H−NMR(CDCl3,TMS,ppm):δ3.72(q,JHF=1.3Hz,3H)、7.12〜7.31(m,4H)
5−(4−フルオロフェニル)−6−メトキシ−2,4−ビス(トリフルオロメチル)ピリミジン;
mp:126〜127℃
1H−NMR(CDCl3,TMS,ppm):δ4.06(s,3H)、7.17〜7.26(m,4H)
[参考例9]
5- (4-fluorophenyl) -1-methyl-2,4-bis (trifluoromethyl) pyrimidin-6 (1H) -one;
mp: 90-91 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 3.72 (q, J HF = 1.3 Hz, 3H), 7.12 to 7.31 (m, 4H)
5- (4-fluorophenyl) -6-methoxy-2,4-bis (trifluoromethyl) pyrimidine;
mp: 126-127 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 4.06 (s, 3H), 7.17 to 7.26 (m, 4H)
[Reference Example 9]

Figure 2009137851
Figure 2009137851

4−ジフルオロメチル−5−(4−フルオロフェニル)−1−メチル−2−トリフルオロメチルピリミジン−6(1H)−オン(1.57g,4.87mmol)のクロロホルム(30ml)溶液に発煙硝酸(19ml)を加え、室温で24時間撹拌した。反応終了後、反応混合物を氷水(500ml)にあけ、クロロホルム(200ml×2)で抽出した。有機層を水(200ml)で洗浄し、無水硫酸マグネシウムで乾燥した後、乾燥剤を濾別し溶媒を減圧留去することによって、4−ジフルオロメチル−5−(4−フルオロ−3−ニトロフェニル)−1−メチル−2−トリフルオロメチルピリミジン−6(1H)−オンの淡黄色固体(1.61g,90%)を得た。   To a solution of 4-difluoromethyl-5- (4-fluorophenyl) -1-methyl-2-trifluoromethylpyrimidin-6 (1H) -one (1.57 g, 4.87 mmol) in chloroform (30 ml), fuming nitric acid ( 19 ml) was added and stirred at room temperature for 24 hours. After completion of the reaction, the reaction mixture was poured into ice water (500 ml) and extracted with chloroform (200 ml × 2). The organic layer was washed with water (200 ml) and dried over anhydrous magnesium sulfate, and then the desiccant was filtered off and the solvent was removed under reduced pressure to give 4-difluoromethyl-5- (4-fluoro-3-nitrophenyl). ) -1-Methyl-2-trifluoromethylpyrimidin-6 (1H) -one was obtained as a pale yellow solid (1.61 g, 90%).

4−ジフルオロメチル−5−(4−フルオロ−3−ニトロフェニル)−1−メチル−2−トリフルオロメチルピリミジン−6(1H)−オンの融点(mp)及びNMRの測定結果を以下に示す。   The melting point (mp) and NMR measurement results of 4-difluoromethyl-5- (4-fluoro-3-nitrophenyl) -1-methyl-2-trifluoromethylpyrimidin-6 (1H) -one are shown below.

mp:118〜119℃
1H−NMR(CDCl3,TMS,ppm):δ3.74(q,JHF=1.3Hz,3H)、6.13(t,JHF=53Hz,1H)、7.37〜7.54(m,1H)、7.54〜7.60(m,1H)、8.06(dd,J=2.3Hz,JHF=6.8Hz,1H)
[参考例10]
mp: 118-119 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 3.74 (q, J HF = 1.3 Hz, 3 H), 6.13 (t, J HF = 53 Hz, 1 H), 7.37 to 7.54 (M, 1H), 7.54 to 7.60 (m, 1H), 8.06 (dd, J = 2.3 Hz, J HF = 6.8 Hz, 1H)
[Reference Example 10]

Figure 2009137851
Figure 2009137851

5−(4−フルオロフェニル)−1−メチル−2,4−ビス(トリフルオロメチル)ピリミジン−6(1H)−オン(3.86g,11.3mmol)のクロロホルム(55ml)溶液に発煙硝酸(28ml)を加え、室温で24時間撹拌した。反応終了後、反応溶液を氷水(300ml)にあけ、クロロホルム(100ml×2)で抽出した。有機層を水(200ml)で洗浄し、無水硫酸マグネシウムで乾燥した後、乾燥剤を濾別し溶媒を減圧留去することによって、5−(4−フルオロ−3−ニトロフェニル)−1−メチル−2,4−ビス(トリフルオロメチル)ピリミジン−6(1H)−オンの白色固体(4.10g,94%)を得た。   To a solution of 5- (4-fluorophenyl) -1-methyl-2,4-bis (trifluoromethyl) pyrimidin-6 (1H) -one (3.86 g, 11.3 mmol) in chloroform (55 ml), fuming nitric acid ( 28 ml) was added and stirred at room temperature for 24 hours. After completion of the reaction, the reaction solution was poured into ice water (300 ml) and extracted with chloroform (100 ml × 2). The organic layer was washed with water (200 ml) and dried over anhydrous magnesium sulfate, and then the desiccant was filtered off and the solvent was removed under reduced pressure to give 5- (4-fluoro-3-nitrophenyl) -1-methyl. A white solid (4.10 g, 94%) of -2,4-bis (trifluoromethyl) pyrimidin-6 (1H) -one was obtained.

5−(4−フルオロ−3−ニトロフェニル)−1−メチル−2,4−ビス(トリフルオロメチル)ピリミジン−6(1H)−オンの融点(mp)及びNMRの測定結果を以下に示す。   The melting point (mp) and NMR measurement results of 5- (4-fluoro-3-nitrophenyl) -1-methyl-2,4-bis (trifluoromethyl) pyrimidin-6 (1H) -one are shown below.

mp:67〜71℃
1H−NMR(CDCl3,TMS,ppm):δ3.75(q,JHF=2.5Hz,3H)、7.37〜7.54(m,1H)、7.54〜7.60(m,1H)、8.06(
dd,J=2.3Hz,JHF=6.8Hz,1H)
[実施例27]
mp: 67-71 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 3.75 (q, J HF = 2.5 Hz, 3H), 7.37 to 7.54 (m, 1H), 7.54 to 7.60 ( m, 1H), 8.06 (
dd, J = 2.3 Hz, J HF = 6.8 Hz, 1H)
[Example 27]

Figure 2009137851
Figure 2009137851

水素化ナトリウム(212mg,5.31mmol)とDMF(15ml)との懸濁液を0℃に冷却し、グリコール酸エチル(589mg,5.66mmol)を滴下した。0℃で39分間攪拌した後、そのままの温度で4−ジフルオロメチル−5−(4−フルオロ−3−ニトロフェニル)−1−メチル−2−トリフルオロメチルピリミジン−6(1H)−オン(1.30g,3.54mmol)のDMF(5ml)溶液を滴下し、徐々に室温まで昇温させ24時間撹拌した。反応終了後、反応混合物に1N−塩酸(60ml)を加え、酢酸エチル(69ml×2)で抽出した。有機層を水(100ml)で洗浄し、無水硫酸マグネシウムで乾燥した後、乾燥剤を濾別し溶媒を減圧留去した。残渣をシリカゲルカラムクロマトグラフィー(ヘキサン:酢酸エチル=2:1(体積比))で精製することによって、4−[4−ジフルオロメチル−1−メチル−6(1H)−オキソ−2−トリフルオロメチルピリミジン−5−イル]−2−ニトロフェノキシ酢酸エチルの黄色固体(505mg,32%)を得た。   A suspension of sodium hydride (212 mg, 5.31 mmol) and DMF (15 ml) was cooled to 0 ° C., and ethyl glycolate (589 mg, 5.66 mmol) was added dropwise. After stirring at 0 ° C. for 39 minutes, 4-difluoromethyl-5- (4-fluoro-3-nitrophenyl) -1-methyl-2-trifluoromethylpyrimidin-6 (1H) -one (1 .30 g, 3.54 mmol) in DMF (5 ml) was added dropwise, gradually warmed to room temperature and stirred for 24 hours. After completion of the reaction, 1N-hydrochloric acid (60 ml) was added to the reaction mixture, and the mixture was extracted with ethyl acetate (69 ml × 2). The organic layer was washed with water (100 ml) and dried over anhydrous magnesium sulfate, the desiccant was filtered off, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (hexane: ethyl acetate = 2: 1 (volume ratio)) to give 4- [4-difluoromethyl-1-methyl-6 (1H) -oxo-2-trifluoromethyl. A yellow solid (505 mg, 32%) of ethyl pyrimidin-5-yl] -2-nitrophenoxyacetate was obtained.

4−[4−ジフルオロメチル−1−メチル−6(1H)−オキソ−2−トリフルオロメチルピリミジン−5−イル]−2−ニトロフェノキシ酢酸エチルの融点(mp)及びNMRの測定結果を以下に示す。   The melting point (mp) and NMR measurement results of ethyl 4- [4-difluoromethyl-1-methyl-6 (1H) -oxo-2-trifluoromethylpyrimidin-5-yl] -2-nitrophenoxyacetate are shown below. Show.

mp:144〜148℃
1H−NMR(CDCl3,TMS,ppm):δ1.28(t,J=7.5Hz,3H)、3.73(q,JHF=1.3Hz,3H)、4.25(q,J=7.5Hz,2H)、4.83(s,2H)、6.13(t,JHF=53Hz,1H)、7.06(d,J=8.8Hz,1H)、7.51(d,J=2.3 and 8.8Hz,1H)、7.96(d,J=2.3Hz,1H)
[実施例28]
mp: 144-148 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 1.28 (t, J = 7.5 Hz, 3H), 3.73 (q, J HF = 1.3 Hz, 3H), 4.25 (q, J = 7.5 Hz, 2H), 4.83 (s, 2H), 6.13 (t, J HF = 53 Hz, 1H), 7.06 (d, J = 8.8 Hz, 1H), 7.51 (D, J = 2.3 and 8.8 Hz, 1H), 7.96 (d, J = 2.3 Hz, 1H)
[Example 28]

Figure 2009137851
Figure 2009137851

水素化ナトリウム(228mg,5.71mmol)とDMF(5ml)との縣濁液を0℃に冷却し、チオグリコ−ル酸エチル(1.57g,4.08mmol)のDMF(4ml)溶液を滴下した。0℃で30分間攪拌した後、そのままの温度で5−(4−フルオロ−3−ニトロフェニル)−3−メチル−2,4−ビス(トリフルオロメチル)ピリミジン−6(1H)−オン(735mg,6.12mmol)を滴下し、徐々に室温まで昇温させ24時間撹拌した。反応終了後、反応混合物に1N−塩酸(30ml)を加え、酢酸エチル(30ml×2)で抽出した。有機層を水(30ml)で洗浄し、無水硫酸マグネシウムで乾燥した後、乾燥剤を濾別し、溶媒を減圧留去した。残渣をシリカゲルカラムク
ロマトグラフィー(ヘキサン:酢酸エチル=2:1(体積比))で精製することによって、4−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2−ニトロフェニルチオ酢酸エチルの白色固体(1.18g,61%)を得た。
A suspension of sodium hydride (228 mg, 5.71 mmol) and DMF (5 ml) was cooled to 0 ° C., and a solution of ethyl thioglycolate (1.57 g, 4.08 mmol) in DMF (4 ml) was added dropwise. . After stirring at 0 ° C. for 30 minutes, 5- (4-fluoro-3-nitrophenyl) -3-methyl-2,4-bis (trifluoromethyl) pyrimidin-6 (1H) -one (735 mg) was maintained at the same temperature. , 6.12 mmol) was added dropwise, and the temperature was gradually raised to room temperature and stirred for 24 hours. After completion of the reaction, 1N-hydrochloric acid (30 ml) was added to the reaction mixture, and the mixture was extracted with ethyl acetate (30 ml × 2). The organic layer was washed with water (30 ml) and dried over anhydrous magnesium sulfate, the desiccant was filtered off, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (hexane: ethyl acetate = 2: 1 (volume ratio)) to give 4- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl). A white solid (1.18 g, 61%) of ethyl pyrimidin-5-yl] -2-nitrophenylthioacetate was obtained.

4−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−2−ニトロフェニルチオ酢酸エチルの融点(mp)及びNMRの測定結果を以下に示す。   The melting point (mp) and NMR measurement results of ethyl 4- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -2-nitrophenylthioacetate are shown below. Shown in

mp:78〜81℃
1H−NMR(CDCl3,TMS,ppm):δ1.32(t,J=7.5Hz,3H)、2.10(s,2H)、3.75(q,JHF=1.3Hz,3H)、4.52(q,J=7.5Hz,2H)、7.13〜7.26(m,3H)
上記実施例に例示した方法によって合成した本発明に係るピリミジン誘導体を表1〜表4にまとめて例示した。
mp: 78-81 ° C
1 H-NMR (CDCl 3 , TMS, ppm): δ 1.32 (t, J = 7.5 Hz, 3H), 2.10 (s, 2H), 3.75 (q, J HF = 1.3 Hz, 3H), 4.52 (q, J = 7.5 Hz, 2H), 7.13 to 7.26 (m, 3H)
The pyrimidine derivatives according to the present invention synthesized by the methods exemplified in the above examples are collectively shown in Tables 1 to 4.

Figure 2009137851
Figure 2009137851

Figure 2009137851
Figure 2009137851

Figure 2009137851
Figure 2009137851

Figure 2009137851
Figure 2009137851

Figure 2009137851
Figure 2009137851

[製剤例]
以下、本発明の2−トリフルオロメチルピリミジン−6(1H)−オン誘導体を除草剤として製剤化する方法を示す。ただし、本発明の除草剤は、これらの製剤例に限定されるものではなく、下記製剤例に例示された以外の他の種々の添加物と任意の割合で混合し、製剤化することもできる。
[Formulation example]
Hereinafter, a method for formulating the 2-trifluoromethylpyrimidin-6 (1H) -one derivative of the present invention as a herbicide will be described. However, the herbicide of the present invention is not limited to these formulation examples, and can be formulated by mixing with other various additives other than those exemplified in the following formulation examples at any ratio. .

本発明の化合物としては、6−[4−ジフルオロメチル−1−メチル−6(1H)−オ
キソ−2−トリフルオロメチルピリミジン−5−イル]−4−プロパルギル−2H−1,4−ベンゾオキサジン−3(4H)−オン(化合物No.15)、6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−4−プロパルギル−2H−1,4−ベンゾオキサジン−3(4H)−オン(化合物No.42)、6−[1−メチル−6(1H)−オキソ−2,4−ビス(トリフルオロメチル)ピリミジン−5−イル]−4−プロパルギル−2H−1,4−ベンゾチアジン−3(4H)−オン(化合物No.43)を用いた。
The compound of the present invention includes 6- [4-difluoromethyl-1-methyl-6 (1H) -oxo-2-trifluoromethylpyrimidin-5-yl] -4-propargyl-2H-1,4-benzoxazine. -3 (4H) -one (Compound No. 15), 6- [1-Methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl] -4-propargyl-2H -1,4-benzoxazin-3 (4H) -one (Compound No. 42), 6- [1-methyl-6 (1H) -oxo-2,4-bis (trifluoromethyl) pyrimidin-5-yl ] -4-propargyl-2H-1,4-benzothiazin-3 (4H) -one (Compound No. 43) was used.

〔製剤例1〕(粒剤)
本発明の化合物(1重量部)、リグニンスルホン酸カルシウム(1重量部)、ラウリルサルフェート(1重量部)、ベントナイト(30重量部)及びタルク(67重量部)に水(15重量部)を加えて、混練機で混練した後、押出式造粒機で造粒した。これを流動乾燥機で乾燥して、本発明の化合物1重量%を活性成分として含む粒剤を得た
〔製剤例2〕(フロアブル剤)
本発明の化合物(20.0重量部)、スルホコハク酸ジ−2−エチルヘキシルエステルナトリウム塩(2.0重量部)、ポリオキシエチレンノニルフェニルエーテル(2.0重量部)、プロピレングリコール(5.0重量部)、消泡剤(0.5重量部)及び水(70.5重量部)を、湿式ボールミルで均一に混合粉砕し、本発明の化合物20重量%を活性成分として含むフロアブル剤を得た。
[Formulation Example 1] (Granule)
Water (15 parts by weight) was added to the compound of the present invention (1 part by weight), calcium lignin sulfonate (1 part by weight), lauryl sulfate (1 part by weight), bentonite (30 parts by weight) and talc (67 parts by weight). The mixture was kneaded with a kneader and then granulated with an extrusion granulator. This was dried with a fluid dryer to obtain granules containing 1% by weight of the compound of the present invention as an active ingredient [Formulation Example 2] (Flowable)
Compound of the present invention (20.0 parts by weight), sulfosuccinic acid di-2-ethylhexyl ester sodium salt (2.0 parts by weight), polyoxyethylene nonylphenyl ether (2.0 parts by weight), propylene glycol (5.0 parts by weight) Parts by weight), antifoaming agent (0.5 parts by weight) and water (70.5 parts by weight) are uniformly mixed and pulverized by a wet ball mill to obtain a flowable agent containing 20% by weight of the compound of the present invention as an active ingredient. It was.

〔製剤例3〕(ドライフロアブル剤)
本発明の化合物(75重量部)、イソバンNo.1(アニオン性界面活性剤:クラレイソプレンケミカル(株)製、商品名)(10重量部)、バニレックスN(アニオン性界面活性剤:山陽国策パルプ(株)製、商品名)(5重量部)、ホワイトカーボン(5重量部)及びクレー(5重量部)を均一に混合微粉砕して、本発明の化合物75重量%を活性成分として含むドライフロアブル(顆粒水和)剤を得た。
[Formulation Example 3] (Dry flowable agent)
Compound of the present invention (75 parts by weight), Isoban No. 1 (anionic surfactant: Kuraray isoprene chemical Co., Ltd., trade name) (10 parts by weight), Vanillex N (anionic surfactant: Sanyo Kokusaku Pulp Co., Ltd., trade name) (5 parts by weight) Then, white carbon (5 parts by weight) and clay (5 parts by weight) were uniformly mixed and pulverized to obtain a dry flowable (granular hydration) agent containing 75% by weight of the compound of the present invention as an active ingredient.

〔製剤例4〕(水和剤)
本発明の化合物(15重量部)、ホワイトカーボン(15重量部)、リグニンスルホン酸カルシウム(3重量部)、ポリオキシエチレンノニルフェニルエーテル(2重量部)、珪藻土(5重量部)及びクレー(60重量部)を、粉砕混合機により均一に混合して、本発明の化合物15重量%を活性成分として含む水和剤を得た。
[Formulation Example 4] (Wetting agent)
Compound of the present invention (15 parts by weight), white carbon (15 parts by weight), calcium lignin sulfonate (3 parts by weight), polyoxyethylene nonylphenyl ether (2 parts by weight), diatomaceous earth (5 parts by weight) and clay (60 Parts by weight) were uniformly mixed by a pulverizing mixer to obtain a wettable powder containing 15% by weight of the compound of the present invention as an active ingredient.

〔製剤例5〕(乳剤)
本発明の化合物(20重量部)、ソルポール700H(乳化剤:東邦化学(株)製、商品名)(20重量部)及びキシレン(60重量部)を混合して、本発明の化合物20重量%を活性成分として含む乳剤を得た。
[Formulation Example 5] (Emulsion)
The compound of the present invention (20 parts by weight), Solpol 700H (Emulsifier: Toho Chemical Co., Ltd., trade name) (20 parts by weight) and xylene (60 parts by weight) were mixed to give 20% by weight of the compound of the present invention. An emulsion containing the active ingredient was obtained.

〔製剤例6〕(粉剤)
本発明の化合物(0.5重量部)、ホワイトカーボン(0.5重量部)、ステアリン酸カルシウム(0.5重量部)、クレー(50.0重量部)及びタルク(48.5重量部)を均一に混合粉砕して、本発明の化合物0.5重量%を活性成分として粉剤を得た。
[Formulation Example 6] (Dust)
Compound of the present invention (0.5 part by weight), white carbon (0.5 part by weight), calcium stearate (0.5 part by weight), clay (50.0 part by weight) and talc (48.5 part by weight) The mixture was uniformly pulverized to obtain a powder with 0.5% by weight of the compound of the present invention as an active ingredient.

[試験例]
次に本発明の化合物の除草効果を試験例を挙げて説明する。
〔試験例1〕水田雑草に対する除草効果試験
1/10,000アールの広さのワグネルポットに水田土壌を充填し、水を加えた後化
成肥料(N:P:K=17:17:17)を混入し、代かきを行った。その後、タイヌビエ、広葉雑草(アゼナ、コナギ)、ホタルイの種子を1cmの深さにそれぞれ30粒ずつを播種した。更に、2葉期の水稲を3本で1株としてポットあたり1株移植した。移植後
ただちに湛水し、水深を約3cmに保った。その後の管理はガラス温室内で行った。水稲移植1日後に、本発明の化合物を製剤例4に準じて調製した水和剤を水希釈し、その水希釈薬液の所定量を滴下した。
[Test example]
Next, the herbicidal effect of the compound of the present invention will be described with reference to test examples.
[Test Example 1] Herbicidal effect test on paddy field weeds A 1 / 10,000 are wide Wagner pot is filled with paddy soil, and water is added to the fertilizer (N: P: K = 17: 17: 17) And scrubbing. Thereafter, 30 seeds of Tainubier, broad-leaved weeds (Azena, kogi) and firefly seeds were sown at a depth of 1 cm. In addition, three rice plants in the two-leaf stage were transplanted as one strain per pot. Immediately after transplantation, the water was submerged and the water depth was maintained at about 3 cm. Subsequent management was performed in a glass greenhouse. One day after paddy rice transplantation, a wettable powder prepared from the compound of the present invention according to Formulation Example 4 was diluted with water, and a predetermined amount of the water-diluted drug solution was added dropwise.

本試験は1薬液濃度区当たり2連制で行い、薬剤処理21日後に水田雑草に対する除草効果を調査した。調査方法は、水田雑草に対する除草効果を処理区に残った植物体の生草重量(g)と無処理区の雑草生草重量(g)を種ごとに調査し、下記の算出式により抑草率(%)を求めた。得られた結果を表5に示した。   This test was carried out in two consecutive systems per chemical solution concentration group, and the herbicidal effect on paddy weeds was investigated 21 days after drug treatment. The survey method is to investigate the weed effect on paddy weeds for each species of raw grass weight (g) of plants remaining in the treated area and untreated area weed weight (g). (%) Was calculated. The obtained results are shown in Table 5.

抑草率の算出式
抑草率(%)=〔1−(a/b)〕×100
(式中、aは処理区の植物体の生草重量(g)を表し、bは無処理区の植物体の生草重量(g)を表す。)
Formula for calculating the repression rate Repression rate (%) = [1- (a / b)] × 100
(In the formula, a represents the raw grass weight (g) of the plant body in the treated area, and b represents the raw grass weight (g) of the plant body in the untreated area.)

Figure 2009137851
Figure 2009137851

〔試験例2〕畑作雑草に対する除草効果試験(土壌処理試験)
1/10,000アールの大きさの素焼製ポットに畑土壌(沖積壌土)をつめ、表層1
cmの土壌と各雑草(メヒシバ、エノコログサ、シロザ、イヌタデ)の種子それぞれ50粒を均一に混合し、表層を軽く押圧した。本発明の化合物を製剤例5に準じて調製した乳剤を水で希釈し、その水希釈薬液を播種2日後に1ヘクタール当たり1000リットルの割合で土壌表面に炭酸ガス式散布機を用いて噴霧した。活性成分の施用量を換算すると1ヘクタール当たり1.2kgに相当した。本試験は1薬液濃度区当たり2連制で行い、薬剤処理21日後に除草効果を試験例1と同様に評価した。試験結果を、表6に示す。
[Test Example 2] Herbicidal effect test on field weeds (soil treatment test)
Fill the field soil (alluvial loam) in an unglazed pot with a size of 1 / 10,000 are, surface layer 1
50 cm each of the soil of cm and 50 seeds of each weed (Meshshiba, Enocologosa, Shiroza, Inuta) were mixed uniformly, and the surface layer was lightly pressed. The emulsion of the compound of the present invention prepared according to Formulation Example 5 was diluted with water, and the water-diluted drug solution was sprayed on the soil surface at a rate of 1000 liters per hectare 2 days after sowing using a carbon dioxide sprayer. . When the application amount of the active ingredient was converted, it corresponded to 1.2 kg per hectare. This test was carried out in two consecutive units per chemical solution concentration group, and the herbicidal effect was evaluated in the same manner as in Test Example 1 21 days after the drug treatment. The test results are shown in Table 6.

Figure 2009137851
Figure 2009137851

〔試験例3〕畑作雑草に対する除草効果試験(茎葉処理試験)
1/10,000アールの大きさのワグネルポットに畑土壌(沖積壌土)をつめ、メヒ
シバ、エノコログサ、シロザ、イヌタデの各雑草種子をそれぞれ別のポットに30粒播き、表層約1cmの土壌とこれらの種子を混合して表層を軽く押圧した。各雑草が1〜2葉期、ダイズが1葉期、コムギが2葉期にそれぞれ達したときに、本発明の化合物を製剤例5に準じて調製した乳剤を水で希釈して所定濃度に調製した後、この希釈薬液を1ヘクタールあたり1000リットルの割合で供試雑草及び作物の茎葉部に炭酸ガス式散布機を用いて噴霧処理した。活性成分の施用量を換算すると1ヘクタール当たり1.2kgに相当した。本試験は1薬液濃度区当たり2連制で行い、薬剤処理14日後に除草効果を試験例1と同様の基準に基づいて評価した。これらの試験結果を表7に示す。
[Test Example 3] Herbicidal effect test on field weeds (stem and leaf treatment test)
Fill the field soil (alluvial loam) in a Wagner pot with a size of 1 / 10,000 are, sow 30 seeds of each species of weeping beetle, enokorogusa, shiroza and inuta in a separate pot. The seeds were mixed and the surface layer was lightly pressed. When each weed reached the 1st to 2nd leaf stage, soybean reached the 1st leaf stage, and wheat reached the 2nd leaf stage, the emulsion prepared with the compound of the present invention according to Formulation Example 5 was diluted with water to a predetermined concentration. After the preparation, the diluted chemical solution was sprayed on the weeds and crops of the crop at a rate of 1000 liters per hectare using a carbon dioxide sprayer. When the application amount of the active ingredient was converted, it corresponded to 1.2 kg per hectare. This test was carried out in two continuous systems per chemical solution concentration group, and the herbicidal effect was evaluated based on the same criteria as in Test Example 1 after 14 days of drug treatment. These test results are shown in Table 7.

Figure 2009137851
Figure 2009137851

Claims (5)

一般式(1)で示される2−トリフルオロメチルピリミジン−6(1H)−オン誘導体。
Figure 2009137851
[式(1)中、R1は炭素数1〜6のフルオロアルキル基を表し、R2は炭素数1〜6のアルキル基を表し、R3は水素原子又は置換されていてもよい炭素数1〜6のアルキル基を
表し、R4は水素原子、置換されていてもよい炭素数1〜6のアルキル基、置換されてい
てもよい炭素数3〜6のアルケニル基、置換されていてもよい炭素数3〜6のアルキニル基又は置換されていてもよい炭素数7〜11のアラルキル基を表し、Xは水素原子又はハロゲン原子を表し、Wは酸素原子又は硫黄原子を表す。]
2-trifluoromethylpyrimidin-6 (1H) -one derivative represented by the general formula (1).
Figure 2009137851
[In the formula (1), R 1 represents a fluoroalkyl group having 1 to 6 carbon atoms, R 2 represents an alkyl group having 1 to 6 carbon atoms, and R 3 represents a hydrogen atom or an optionally substituted carbon number. Represents a 1 to 6 alkyl group, R 4 represents a hydrogen atom, an optionally substituted alkyl group having 1 to 6 carbon atoms, an optionally substituted alkenyl group having 3 to 6 carbon atoms, or an optionally substituted group; A good alkynyl group having 3 to 6 carbon atoms or an optionally substituted aralkyl group having 7 to 11 carbon atoms is represented, X represents a hydrogen atom or a halogen atom, and W represents an oxygen atom or a sulfur atom. ]
一般式(1b)で示される5−(4−ハロ−3−ニトロフェニル)−2−トリフルオロメチルピリミジン−6(1H)−オン誘導体と一般式(5)で示されるグリコール酸類又はチオグリコール酸類とを塩基存在下にて反応させ、一般式(2)で示される2−トリフルオロメチルピリミジン−6(1H)−オン誘導体の製造方法。
Figure 2009137851
[式(1b)中、R1、R2及びXは前記と同じ意味を表す。Ybはハロゲン原子を表す。

Figure 2009137851
[式(5)中、R3及びWは前記と同じ意味を表す。R5は炭素数1〜6のアルキル基を表す。]
Figure 2009137851
[式(2)中、R1、R2、R3、R5、X及びWは前記と同じ意味を表す。]
5- (4-halo-3-nitrophenyl) -2-trifluoromethylpyrimidin-6 (1H) -one derivative represented by general formula (1b) and glycolic acid or thioglycolic acid represented by general formula (5) And in the presence of a base, a method for producing a 2-trifluoromethylpyrimidin-6 (1H) -one derivative represented by the general formula (2).
Figure 2009137851
[In formula (1b), R 1 , R 2 and X represent the same meaning as described above. Y b represents a halogen atom.
]
Figure 2009137851
[In Formula (5), R < 3 > and W represent the same meaning as the above. R 5 represents an alkyl group having 1 to 6 carbon atoms. ]
Figure 2009137851
[In the formula (2), R 1 , R 2 , R 3 , R 5 , X and W represent the same meaning as described above. ]
一般式(2)で示される2−トリフルオロメチルピリミジン−6(1H)−オン誘導体のニトロ基を還元し分子内アミド化反応を行うことを特徴とする、一般式(1a)で示される2−トリフルオロメチルピリミジン−6(1H)−オン誘導体の製造方法。
Figure 2009137851
[式(2)中、R1、R2、R3、R5、X及びWは前記と同じ意味を表す。]
Figure 2009137851
[式(1a)中、R1、R2、R3、X及びWは前記と同じ意味を表す。]
2 represented by the general formula (1a), wherein the nitro group of the 2-trifluoromethylpyrimidin-6 (1H) -one derivative represented by the general formula (2) is reduced to perform an intramolecular amidation reaction. A method for producing a trifluoromethylpyrimidin-6 (1H) -one derivative.
Figure 2009137851
[In the formula (2), R 1 , R 2 , R 3 , R 5 , X and W represent the same meaning as described above. ]
Figure 2009137851
[In the formula (1a), R 1 , R 2 , R 3 , X and W represent the same meaning as described above. ]
一般式(1a)で示される2−トリフルオロメチルピリミジン−6(1H)−オン誘導体と、一般式(3)で示される化合物とを塩基の存在下に反応させることを特徴とする、一般式(1c)で示される2−トリフルオロメチルピリミジン−6(1H)−オン誘導体の製造方法。
Figure 2009137851
[式(1a)中、R1、R2、R3、X及びWは前記と同じ意味を表す。]
Figure 2009137851
[式(3)中、R4bは置換されていてもよい炭素数1〜6のアルキル基、置換されていてもよい炭素数3〜6のアルケニル基、置換されていてもよい炭素数3〜6のアルキニル基、置換されていてもよい炭素数7〜11のアラルキル基を表し、Lは脱離基を表す。]
Figure 2009137851
[式(1c)中、R1、R2、R3、R4b、X及びWは前記と同じ意味を表す。]
A 2-trifluoromethylpyrimidin-6 (1H) -one derivative represented by the general formula (1a) and a compound represented by the general formula (3) are reacted in the presence of a base. A method for producing a 2-trifluoromethylpyrimidin-6 (1H) -one derivative represented by (1c).
Figure 2009137851
[In the formula (1a), R 1 , R 2 , R 3 , X and W represent the same meaning as described above. ]
Figure 2009137851
[In the formula (3), R 4b is an optionally substituted alkyl group having 1 to 6 carbon atoms, an optionally substituted alkenyl group having 3 to 6 carbon atoms, and an optionally substituted 3 to 3 carbon atoms. 6 represents an alkynyl group of 6 or an optionally substituted aralkyl group having 7 to 11 carbon atoms, and L represents a leaving group. ]
Figure 2009137851
[In the formula (1c), R 1 , R 2 , R 3 , R 4b , X and W represent the same meaning as described above. ]
一般式(1)で示される2−トリフルオロメチルピリミジン−6(1H)−オン誘導体を有効成分とする除草剤。
Figure 2009137851
[式(1)中、R1、R2、R3、R4、X及びWは前記と同じ意味を表す。]
A herbicide containing a 2-trifluoromethylpyrimidin-6 (1H) -one derivative represented by the general formula (1) as an active ingredient.
Figure 2009137851
[In the formula (1), R 1 , R 2 , R 3 , R 4 , X and W represent the same meaning as described above. ]
JP2007313525A 2007-12-04 2007-12-04 2-trifluoromethylpyrimidin-6(1h)-one derivative, method for producing the same, and herbicide comprising the derivative as active ingredient Pending JP2009137851A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007313525A JP2009137851A (en) 2007-12-04 2007-12-04 2-trifluoromethylpyrimidin-6(1h)-one derivative, method for producing the same, and herbicide comprising the derivative as active ingredient

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007313525A JP2009137851A (en) 2007-12-04 2007-12-04 2-trifluoromethylpyrimidin-6(1h)-one derivative, method for producing the same, and herbicide comprising the derivative as active ingredient

Publications (1)

Publication Number Publication Date
JP2009137851A true JP2009137851A (en) 2009-06-25

Family

ID=40868869

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007313525A Pending JP2009137851A (en) 2007-12-04 2007-12-04 2-trifluoromethylpyrimidin-6(1h)-one derivative, method for producing the same, and herbicide comprising the derivative as active ingredient

Country Status (1)

Country Link
JP (1) JP2009137851A (en)

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012041789A1 (en) 2010-10-01 2012-04-05 Basf Se Herbicidal benzoxazinones
WO2013040117A1 (en) 2011-09-13 2013-03-21 Monsanto Technology Llc Methods and compositions for weed control
WO2014151255A1 (en) 2013-03-15 2014-09-25 Monsanto Technology Llc Methods and compositions for weed control
CN104592068A (en) * 2015-02-05 2015-05-06 常州百敖威生物科技有限公司 One-pot synthesis method of anticancer drug ceritinib intermediate 1-(isopropylsulfonyl)-2-nitrobenzene
US9121022B2 (en) 2010-03-08 2015-09-01 Monsanto Technology Llc Method for controlling herbicide-resistant plants
US9416363B2 (en) 2011-09-13 2016-08-16 Monsanto Technology Llc Methods and compositions for weed control
US9422558B2 (en) 2011-09-13 2016-08-23 Monsanto Technology Llc Methods and compositions for weed control
US9422557B2 (en) 2011-09-13 2016-08-23 Monsanto Technology Llc Methods and compositions for weed control
US9540642B2 (en) 2013-11-04 2017-01-10 The United States Of America, As Represented By The Secretary Of Agriculture Compositions and methods for controlling arthropod parasite and pest infestations
US9777288B2 (en) 2013-07-19 2017-10-03 Monsanto Technology Llc Compositions and methods for controlling leptinotarsa
US9850496B2 (en) 2013-07-19 2017-12-26 Monsanto Technology Llc Compositions and methods for controlling Leptinotarsa
US10041068B2 (en) 2013-01-01 2018-08-07 A. B. Seeds Ltd. Isolated dsRNA molecules and methods of using same for silencing target molecules of interest
US10240162B2 (en) 2012-05-24 2019-03-26 A.B. Seeds Ltd. Compositions and methods for silencing gene expression
WO2019101513A1 (en) 2017-11-23 2019-05-31 Basf Se Herbicidal pyridylethers
WO2019101551A1 (en) 2017-11-23 2019-05-31 Basf Se Herbicidal phenylethers
US10334848B2 (en) 2014-01-15 2019-07-02 Monsanto Technology Llc Methods and compositions for weed control using EPSPS polynucleotides
US10378012B2 (en) 2014-07-29 2019-08-13 Monsanto Technology Llc Compositions and methods for controlling insect pests
US10557138B2 (en) 2013-12-10 2020-02-11 Beeologics, Inc. Compositions and methods for virus control in Varroa mite and bees
US10609930B2 (en) 2013-03-13 2020-04-07 Monsanto Technology Llc Methods and compositions for weed control
US10612019B2 (en) 2013-03-13 2020-04-07 Monsanto Technology Llc Methods and compositions for weed control
US10655136B2 (en) 2015-06-03 2020-05-19 Monsanto Technology Llc Methods and compositions for introducing nucleic acids into plants
US10683505B2 (en) 2013-01-01 2020-06-16 Monsanto Technology Llc Methods of introducing dsRNA to plant seeds for modulating gene expression
US10760086B2 (en) 2011-09-13 2020-09-01 Monsanto Technology Llc Methods and compositions for weed control
US10801028B2 (en) 2009-10-14 2020-10-13 Beeologics Inc. Compositions for controlling Varroa mites in bees
US10808249B2 (en) 2011-09-13 2020-10-20 Monsanto Technology Llc Methods and compositions for weed control
US10806146B2 (en) 2011-09-13 2020-10-20 Monsanto Technology Llc Methods and compositions for weed control
US10829828B2 (en) 2011-09-13 2020-11-10 Monsanto Technology Llc Methods and compositions for weed control
US10883103B2 (en) 2015-06-02 2021-01-05 Monsanto Technology Llc Compositions and methods for delivery of a polynucleotide into a plant
US10888579B2 (en) 2007-11-07 2021-01-12 Beeologics Inc. Compositions for conferring tolerance to viral disease in social insects, and the use thereof
US10968449B2 (en) 2015-01-22 2021-04-06 Monsanto Technology Llc Compositions and methods for controlling Leptinotarsa
US10988764B2 (en) 2014-06-23 2021-04-27 Monsanto Technology Llc Compositions and methods for regulating gene expression via RNA interference
US11091770B2 (en) 2014-04-01 2021-08-17 Monsanto Technology Llc Compositions and methods for controlling insect pests
US11807857B2 (en) 2014-06-25 2023-11-07 Monsanto Technology Llc Methods and compositions for delivering nucleic acids to plant cells and regulating gene expression

Cited By (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10888579B2 (en) 2007-11-07 2021-01-12 Beeologics Inc. Compositions for conferring tolerance to viral disease in social insects, and the use thereof
US10801028B2 (en) 2009-10-14 2020-10-13 Beeologics Inc. Compositions for controlling Varroa mites in bees
US9988634B2 (en) 2010-03-08 2018-06-05 Monsanto Technology Llc Polynucleotide molecules for gene regulation in plants
US11812738B2 (en) 2010-03-08 2023-11-14 Monsanto Technology Llc Polynucleotide molecules for gene regulation in plants
US9121022B2 (en) 2010-03-08 2015-09-01 Monsanto Technology Llc Method for controlling herbicide-resistant plants
WO2012041789A1 (en) 2010-10-01 2012-04-05 Basf Se Herbicidal benzoxazinones
US10829828B2 (en) 2011-09-13 2020-11-10 Monsanto Technology Llc Methods and compositions for weed control
EP3434780A1 (en) 2011-09-13 2019-01-30 Monsanto Technology LLC Methods and compositions for weed control
WO2013040117A1 (en) 2011-09-13 2013-03-21 Monsanto Technology Llc Methods and compositions for weed control
US10760086B2 (en) 2011-09-13 2020-09-01 Monsanto Technology Llc Methods and compositions for weed control
US9416363B2 (en) 2011-09-13 2016-08-16 Monsanto Technology Llc Methods and compositions for weed control
US10806146B2 (en) 2011-09-13 2020-10-20 Monsanto Technology Llc Methods and compositions for weed control
EP3296402A2 (en) 2011-09-13 2018-03-21 Monsanto Technology LLC Methods and compositions for weed control
US9422558B2 (en) 2011-09-13 2016-08-23 Monsanto Technology Llc Methods and compositions for weed control
EP3434779A1 (en) 2011-09-13 2019-01-30 Monsanto Technology LLC Methods and compositions for weed control
EP3382027A2 (en) 2011-09-13 2018-10-03 Monsanto Technology LLC Methods and compositions for weed control
US10808249B2 (en) 2011-09-13 2020-10-20 Monsanto Technology Llc Methods and compositions for weed control
US9422557B2 (en) 2011-09-13 2016-08-23 Monsanto Technology Llc Methods and compositions for weed control
US10240162B2 (en) 2012-05-24 2019-03-26 A.B. Seeds Ltd. Compositions and methods for silencing gene expression
US10240161B2 (en) 2012-05-24 2019-03-26 A.B. Seeds Ltd. Compositions and methods for silencing gene expression
US10934555B2 (en) 2012-05-24 2021-03-02 Monsanto Technology Llc Compositions and methods for silencing gene expression
US10041068B2 (en) 2013-01-01 2018-08-07 A. B. Seeds Ltd. Isolated dsRNA molecules and methods of using same for silencing target molecules of interest
US10683505B2 (en) 2013-01-01 2020-06-16 Monsanto Technology Llc Methods of introducing dsRNA to plant seeds for modulating gene expression
US10612019B2 (en) 2013-03-13 2020-04-07 Monsanto Technology Llc Methods and compositions for weed control
US10609930B2 (en) 2013-03-13 2020-04-07 Monsanto Technology Llc Methods and compositions for weed control
WO2014151255A1 (en) 2013-03-15 2014-09-25 Monsanto Technology Llc Methods and compositions for weed control
US10568328B2 (en) 2013-03-15 2020-02-25 Monsanto Technology Llc Methods and compositions for weed control
US10597676B2 (en) 2013-07-19 2020-03-24 Monsanto Technology Llc Compositions and methods for controlling Leptinotarsa
US9850496B2 (en) 2013-07-19 2017-12-26 Monsanto Technology Llc Compositions and methods for controlling Leptinotarsa
US11377667B2 (en) 2013-07-19 2022-07-05 Monsanto Technology Llc Compositions and methods for controlling Leptinotarsa
US9777288B2 (en) 2013-07-19 2017-10-03 Monsanto Technology Llc Compositions and methods for controlling leptinotarsa
US9856495B2 (en) 2013-07-19 2018-01-02 Monsanto Technology Llc Compositions and methods for controlling Leptinotarsa
US9540642B2 (en) 2013-11-04 2017-01-10 The United States Of America, As Represented By The Secretary Of Agriculture Compositions and methods for controlling arthropod parasite and pest infestations
US10100306B2 (en) 2013-11-04 2018-10-16 Monsanto Technology Llc Compositions and methods for controlling arthropod parasite and pest infestations
US10927374B2 (en) 2013-11-04 2021-02-23 Monsanto Technology Llc Compositions and methods for controlling arthropod parasite and pest infestations
US10557138B2 (en) 2013-12-10 2020-02-11 Beeologics, Inc. Compositions and methods for virus control in Varroa mite and bees
US10334848B2 (en) 2014-01-15 2019-07-02 Monsanto Technology Llc Methods and compositions for weed control using EPSPS polynucleotides
US11091770B2 (en) 2014-04-01 2021-08-17 Monsanto Technology Llc Compositions and methods for controlling insect pests
US10988764B2 (en) 2014-06-23 2021-04-27 Monsanto Technology Llc Compositions and methods for regulating gene expression via RNA interference
US11807857B2 (en) 2014-06-25 2023-11-07 Monsanto Technology Llc Methods and compositions for delivering nucleic acids to plant cells and regulating gene expression
US11124792B2 (en) 2014-07-29 2021-09-21 Monsanto Technology Llc Compositions and methods for controlling insect pests
US10378012B2 (en) 2014-07-29 2019-08-13 Monsanto Technology Llc Compositions and methods for controlling insect pests
US10968449B2 (en) 2015-01-22 2021-04-06 Monsanto Technology Llc Compositions and methods for controlling Leptinotarsa
CN104592068A (en) * 2015-02-05 2015-05-06 常州百敖威生物科技有限公司 One-pot synthesis method of anticancer drug ceritinib intermediate 1-(isopropylsulfonyl)-2-nitrobenzene
US10883103B2 (en) 2015-06-02 2021-01-05 Monsanto Technology Llc Compositions and methods for delivery of a polynucleotide into a plant
US10655136B2 (en) 2015-06-03 2020-05-19 Monsanto Technology Llc Methods and compositions for introducing nucleic acids into plants
WO2019101513A1 (en) 2017-11-23 2019-05-31 Basf Se Herbicidal pyridylethers
WO2019101551A1 (en) 2017-11-23 2019-05-31 Basf Se Herbicidal phenylethers

Similar Documents

Publication Publication Date Title
JP2009137851A (en) 2-trifluoromethylpyrimidin-6(1h)-one derivative, method for producing the same, and herbicide comprising the derivative as active ingredient
JP2009126792A (en) 5-substituted phenyl-2-trifluoromethylpyrimidin-6(1h)-one derivative, method for producing the same and herbicide containing the derivative as active ingredient
WO2004029060A1 (en) Novel herbicides, usage thereof, novel thienopyrimidine derivatives, intermediates of the same, and process for production thereof
WO2010064688A1 (en) Pyrimidine derivatives, horticultural insecticides comprising said derivatives and method of use thereof
JPH0539272A (en) Pyrimidinedione derivative and herbicide
JPH04235171A (en) Sulfohydroxamic acid derivative, production thereof and herbicide containing the same derivative as active ingredient
JP2817863B2 (en) Fluorine-containing pyrazole compound, its production method and pest control agent
JPH07285962A (en) Pyridinecarboxylic acid amide derivative
JP4297226B2 (en) Anilinopyrimidinone derivatives, methods for producing them, and insecticides and acaricides containing them as active ingredients
JP2946656B2 (en) Uracil derivative and herbicide
JPH03287585A (en) Uracil derivative and noxious life controlling agent
JP4674676B2 (en) 2-Substituted aminopyrimidinone derivatives, methods for producing them, and insecticides and acaricides containing them as active ingredients
JP3055268B2 (en) Uracil derivatives and herbicides
JP3074664B2 (en) Aralkyloxypyrimidine derivatives, their preparation and pesticides
JP2666100B2 (en) 2-acylamino-2-thiazoline compound, production method thereof and pest control agent
JP3038903B2 (en) Uracil derivatives and pesticides
JP2000095778A (en) Pyrazole derivative, production thereof and horticultural bactericide
JPWO2006004215A1 (en) Benzoxazole compounds
JP4263090B2 (en) Thiazolotriazole derivatives, intermediates thereof and herbicides containing the derivatives as active ingredients
WO2000050397A1 (en) Substituted piperidinedione derivatives and herbicide
JPH0692943A (en) Dihydropyrimidinedione derivative and herbicide
JPH08245594A (en) 2-oxyaniline derivative and herbicide
JP3074657B2 (en) Aralkylaminopyrimidine derivatives, their preparation and pesticides
JP2803076B2 (en) Phenoxyalkylamine derivatives, their preparation and pest control agents
JP2803075B2 (en) Phenoxyalkylamine compounds, their preparation and pest control agents