JPS59210083A - 1,3,4-thiadiazol-5-one derivative, its preparation, and herbicide containing said derivative as active component - Google Patents

1,3,4-thiadiazol-5-one derivative, its preparation, and herbicide containing said derivative as active component

Info

Publication number
JPS59210083A
JPS59210083A JP58084641A JP8464183A JPS59210083A JP S59210083 A JPS59210083 A JP S59210083A JP 58084641 A JP58084641 A JP 58084641A JP 8464183 A JP8464183 A JP 8464183A JP S59210083 A JPS59210083 A JP S59210083A
Authority
JP
Japan
Prior art keywords
thiadiazol
group
lower alkyl
derivative
formula
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
JP58084641A
Other languages
Japanese (ja)
Inventor
Nobuyoshi Asai
浅井 信好
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.)
Otsuka Chemical Co Ltd
Otsuka Kagaku Yakuhin KK
Original Assignee
Otsuka Chemical Co Ltd
Otsuka Kagaku Yakuhin KK
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 Otsuka Chemical Co Ltd, Otsuka Kagaku Yakuhin KK filed Critical Otsuka Chemical Co Ltd
Priority to JP58084641A priority Critical patent/JPS59210083A/en
Publication of JPS59210083A publication Critical patent/JPS59210083A/en
Pending legal-status Critical Current

Links

Abstract

NEW MATERIAL:The compound of formula I (R1 is lower alkyl, cycloalkyl or phenyl; R2 is lower alkyl or lower alkoxycarbonyl-lower alkyl; A is >C=0 or >CH-OH; n is 1 or 2). EXAMPLE:4-Methyl-2-(3-methylimidazolidine-2,5-dion-1-yl)-1,3,4-thiadia zol-5-one. USE:Herbicide having excellent herbicidal activity especially against the weeds such as Yerba de tajo, green amaranth, polygonum, false pimpernel, large crab- grass, umbrella sedge, water foxtail, etc. PREPARATION:The compound of formula I can be prepared by reacting the 1,3,4-thiadiazol-5-one derivative of formula II or formula III with the aminocarboxylic acid ester derivative of formula IV preferably in the presence of a catalyst such as triethylamine, at 60-150 deg.C.

Description

【発明の詳細な説明】 本発明は、新規な1,3.4−チアジアゾール−5−オ
ン誘導体、その製造法及び該誘導体を有効成分とする除
草剤に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel 1,3,4-thiadiazol-5-one derivative, a method for producing the same, and a herbicide containing the derivative as an active ingredient.

本発明化合物に類似する従来の化合物としては、1.3
.4−チアジアゾール−5−オン−2−イル尿素誘導体
が公知であり、特公昭45−34133号、特公昭46
−2096号、特開昭48−467号等にその製造方法
が、特公昭48−28051号、特公昭48−5805
4号等にその除草剤としての用途が開示されている。し
かし、上記誘導体の1.3.4−チアジアゾール環の2
位は鎖状I!ウレイレン基のみであり、その除草活性も
充分なものではなかった。
Conventional compounds similar to the compound of the present invention include 1.3
.. 4-Thiadiazol-5-one-2-yl urea derivatives are known, and are disclosed in Japanese Patent Publications No. 34133/1983 and Japanese Patent Publication No. 1983/1983.
-2096, Japanese Patent Publication No. 48-467, etc., the manufacturing method is described in Japanese Patent Publication No. 48-28051, Japanese Patent Publication No. 48-5805.
No. 4 etc. disclose its use as a herbicide. However, 2 of the 1,3,4-thiadiazole ring of the above derivative
The position is chain I! It contained only a ureylene group, and its herbicidal activity was not sufficient.

本発明者は、1,3.4−チアジアゾール−5−オン誘
導体の合成について種々研究した結果、1.3.4−チ
アジアゾール−5−オン誘導体とアミノカルボン酸エス
テル誘導体とを反応させることにより1,3.4−チア
ジアゾール環の2位に環状置換基を容易に導入でき、更
にそれを還元することが可能であること、及びこれらの
化合物が優れた除草活性を有することを見出した。
As a result of various studies on the synthesis of 1,3.4-thiadiazol-5-one derivatives, the present inventor discovered that by reacting a 1.3.4-thiadiazol-5-one derivative with an aminocarboxylic acid ester derivative, , 3,4-thiadiazole ring at the 2-position and that it is possible to further reduce the cyclic substituent, and that these compounds have excellent herbicidal activity.

本発明の化合物は一般式 〔式中、R1は低級アルキル基、シクロアルキル基又は
フェニル基を、R2は低級アルキル基又は低級アルコキ
シカルボニル低級アルキル基を示す。
The compound of the present invention has the general formula [wherein R1 represents a lower alkyl group, a cycloalkyl group, or a phenyl group, and R2 represents a lower alkyl group or a lower alkoxycarbonyl lower alkyl group].

Aは>C=O基又は;c+−oH基を、nは1又は2を
示す。〕 で表わされる。
A represents >C=O group or ;c+-oH group, and n represents 1 or 2. ] It is expressed as .

本発明化合物における低級アルキル基としては、メチル
基、エチル基、n−プロピル基、イソプロピル基、n−
ブチル基、イソブチル基、5eO−ブチル基、t−ブチ
ル基等を挙げることができる。
Examples of the lower alkyl group in the compound of the present invention include methyl group, ethyl group, n-propyl group, isopropyl group, n-
Examples include butyl group, isobutyl group, 5eO-butyl group, t-butyl group, and the like.

シクロアルキル基としては、シクロプロピル基、シクロ
ペンチル基、シクロヘキシル基等を挙げることができる
。低級アルコキシカルボニル低級アルキル基としては、
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、プロボキシカルボニルメチル基、メトキシカルボ
ニルエチル基、■トキシ力ルポニルエチル基、プロポキ
シカルボニルエチル基等を挙げることができる。
Examples of the cycloalkyl group include a cyclopropyl group, a cyclopentyl group, and a cyclohexyl group. As the lower alkoxycarbonyl lower alkyl group,
Examples include a methoxycarbonylmethyl group, an ethoxycarbonylmethyl group, a propoxycarbonylmethyl group, a methoxycarbonylethyl group, a methoxycarbonylethyl group, and a propoxycarbonylethyl group.

本発明化合物は、下記反応工程式に従って容易に製造す
ることができる。
The compound of the present invention can be easily produced according to the following reaction scheme.

反応工程式 〔式中、R+ 、R2及びnは上記に同じ。R3は低級
アルキル基を示す。〕 上記反応工程式で示される一般式(I[)及び(I[[
)の1.3.4−チアジアゾール−5−オン誘導体は公
知化合物であり、公知の方法例えば2−アミノ−1,3
,4−チアジアゾール−5−オン誘導体とホスゲン又は
クロロギ酸フェニルとを反応させることにより製造され
る。
Reaction process formula [wherein R+, R2 and n are the same as above. R3 represents a lower alkyl group. ] General formulas (I[) and (I[[
The 1.3.4-thiadiazol-5-one derivative of ) is a known compound and can be prepared by known methods such as 2-amino-1,3
, 4-thiadiazol-5-one derivative and phosgene or phenyl chloroformate.

上記反応工程式で示される一般式(IV)のアミノカル
ボン酸エステル誘導体は、公知化合物であり、例えばN
−メチルグリシンエステル、N−エチルグリシンエステ
ル、N−n−プロピルグリシンエステル、N−イソプロ
ピルグリシンエステル、N−n−ブチルグリシンエステ
ル、N−イソブチルグリシンエステル、N −5ec−
ブチルグリシンエステル、N−t−ブチルグリシンエス
テル、N−メチルアミノプロピオン酸エステル、N−エ
チルアミノプロピオン酸エステル、N−n−プルピルア
ミノプロピオン酸エステル、N−イソプロピルアミノプ
ロピオン酸エステル、N−n−ブチルアミノプロピオン
酸エステル、N−イソブチルアミノプロとオン酸エステ
ル、N−5eO−ブチルアミノプロピオン酸エステル、
N−t−ブチルアミノプロピオン酸エステル、イミノニ
酢酸エステル、イミノニブロビオン酸エステル等を挙げ
ることができる; 一般式(IF)又は(III)の化合物と一般式(IV
)の化合物との反応は無溶媒下、又は溶媒中で行なわれ
る。使用される溶媒としては、例えばジクロロメタン、
ジクロロエタン、クロロホルム等のハロゲン化炭化水素
類、ジエチルエーテル、ジブチルエーテル、テトラヒド
ロフラン、ジオキサン等のエーテル類、アセトニトリル
、酢酸エチル、N。
The aminocarboxylic acid ester derivative of general formula (IV) shown in the above reaction scheme is a known compound, for example, N
-Methylglycine ester, N-ethylglycine ester, N-n-propylglycine ester, N-isopropylglycine ester, N-n-butylglycine ester, N-isobutylglycine ester, N -5ec-
Butylglycine ester, N-t-butylglycine ester, N-methylaminopropionic ester, N-ethylaminopropionic ester, N-n-purpylaminopropionic ester, N-isopropylaminopropionic ester, N-n -butylaminopropionic acid ester, N-isobutylaminopro-ionic acid ester, N-5eO-butylaminopropionic acid ester,
Examples include Nt-butylaminopropionic acid ester, iminodiacetic acid ester, iminonibrobionic acid ester, etc.; Compounds of general formula (IF) or (III) and general formula (IV
) The reaction with the compound is carried out without a solvent or in a solvent. Examples of the solvent used include dichloromethane,
Halogenated hydrocarbons such as dichloroethane and chloroform, ethers such as diethyl ether, dibutyl ether, tetrahydrofuran and dioxane, acetonitrile, ethyl acetate, N.

N−ジメチルホルムアミド、ジメチルスルホキサイド、
とリジン等を挙げることができる。一般式(II)又は
(III)の化合物と一般式(IV)の化合物との反応
は無触媒下でも可能であるが、好ましくは触媒を使用す
る。使用される触媒としては、第三級アミン類例えば1
〜リエチルアミン、トリブチルアミン、ヘキサメチレン
テトラミン等を挙げることができる。触媒の使用量は、
一般式(n)又は(III)の化合物に対して通常0.
01〜2.0倍モル量程度、好ましくは0.1〜1.0
倍モル量である。一般式(II)又はCI[[)の化合
物と一般式(rV)の化合物との使用割合は、限定され
ず広範囲で可能であるが、通常一般式(II)又は(n
l)の化合物に対して一般式(IV)の化合物を0.5
〜2.0倍モルi程度好ましくは1.0〜1.2倍モル
量である。反応温度は、溶媒の還流温度でよいが、一般
には60〜150℃程度であり、反応は通常2〜10時
間程時間路了する。上記製造法で得られる本発明化合物
〔工〕′は、一般的な精製方法例えば再結晶、カラムク
ロマトグラフィー等により粘製することができる。
N-dimethylformamide, dimethyl sulfoxide,
and lysine. Although the reaction between the compound of general formula (II) or (III) and the compound of general formula (IV) can be carried out without a catalyst, a catalyst is preferably used. Catalysts used include tertiary amines such as 1
- Liethylamine, tributylamine, hexamethylenetetramine, etc. can be mentioned. The amount of catalyst used is
Usually 0.0% for the compound of general formula (n) or (III).
01 to 2.0 times the molar amount, preferably 0.1 to 1.0
This is twice the molar amount. The ratio of the compound of general formula (II) or CI[[) and the compound of general formula (rV) to be used is not limited and can be varied over a wide range;
0.5 of the compound of general formula (IV) to the compound of l)
The amount is about 2.0 times molar i, preferably 1.0 to 1.2 times molar. The reaction temperature may be the reflux temperature of the solvent, but is generally about 60 to 150°C, and the reaction usually takes about 2 to 10 hours to complete. The compound of the present invention obtained by the above production method can be made into a viscous product by common purification methods such as recrystallization and column chromatography.

上記本発明化合物〔■〕′を還元することにより本発明
化合物(I ) ″を製造することができる。
The present compound (I)'' can be produced by reducing the above-mentioned present compound [■]'.

還元反応は溶媒中で行なうことができる。使用される溶
媒としては、例えばメチルアルコール、エチルアルコー
ル、プロピルアルコール、ブチルアルコール等のアルコ
ール類又はジエチルエーテル、ジブチルエーテル、テト
ラヒドロフラン、ジオキサン等のエーテル類と上記アル
コール類との混合溶媒を挙げることができる。還元剤と
しては、例えば水素化ホウ素ナトリウム等が使用される
。一般式〔■〕′で示される化合物と水素化ホウ素ナト
リウム等の還元剤との使用割合としては、限定されず広
い範囲で可能であるが、一般には前者に対して後者を0
.1〜5倍モル量程度好ましくは、0.25〜1倍モル
量使用される。反応温度としては、通常−50〜100
℃程度好ましくは0〜50℃であり、反応は通常1〜5
時間程度で終了する。上記製造法で得られる本発明化合
物CI)“は、一般的な精製方法例えば再結晶、カラム
クロマトグラフィー等により精製することができる。
The reduction reaction can be carried out in a solvent. Examples of the solvent used include mixed solvents of alcohols such as methyl alcohol, ethyl alcohol, propyl alcohol, and butyl alcohol, or ethers such as diethyl ether, dibutyl ether, tetrahydrofuran, and dioxane, and the above alcohols. . As the reducing agent, for example, sodium borohydride or the like is used. The ratio of the compound represented by the general formula [■]' and the reducing agent such as sodium borohydride is not limited and can be used within a wide range, but generally the latter is 0% to the former.
.. About 1 to 5 times the molar amount, preferably 0.25 to 1 times the molar amount, is used. The reaction temperature is usually -50 to 100
℃, preferably 0 to 50℃, and the reaction is usually 1 to 5℃.
It will finish in about an hour. The compound CI) of the present invention obtained by the above production method can be purified by general purification methods such as recrystallization, column chromatography, etc.

かくして得られる本発明の化合物を例示すると以下の通
りである。
Examples of the compounds of the present invention thus obtained are as follows.

04−メチル−2−(3−メチルイミダゾリジン−2,
5−ジオン−1−イル)−1,3,4−チアジアゾール
−5−オン 04−イソブチル−2−(3−メチルイミダゾリジン−
2,5−ジオン−1−イル)−1,3゜4−チアジアゾ
ール−5−オン 04−シクロへキシル−2−(3−メチルイミダゾリジ
ン−2,5−ジオン−1−イル)−1゜3.4−チアジ
アゾール−5−オン 04−フェニル−2−(3−メチルイミダゾリジン−2
,5−ジオン−1−イル)−1,3,4−チアジアゾー
ル−5−オン 04−メチル−2−(3−イソプロピルイミダゾリジン
−2,5−ジオン−1−イル)−1,3゜4−チアジア
ゾール−5−オン o4−メチル−2−(3−シクロヘキシルイミダゾリジ
ン−2,5−ジオン−1−イル)−1゜3.4−チアジ
アゾール−5−オン 04−メチル−2−(3−sec−ブチルイミダゾリジ
ン−2,5−ジオン−1−イル)−1,3゜4−チアジ
アゾール−5−オン 04−メチル−2−(3−エトキシカルボニルメチルイ
ミダゾリジン−2,5−ジオン−1−イル)−1,3,
4−チアジアゾール−5−オン04−メチル−2−(3
−1トキシ力ルボニルエチルイミダゾリジン−2,5−
ジオン−1−イル)−1,3,4−チアジアゾール−5
−オン04−メチル−2−(3−メチルへキサヒドロピ
リミジン−2,6−シオンー1−イル)−1゜3.4−
チアジアゾール−5−オン 04−イソブチル−2−(3−シクロへキシルへキサヒ
ドロピリミジン−2,6−シオンー1−イル11.3.
4−チアジアゾール−5−オン 04−メチル−2−(3−エトキシカルボニルメチルヘ
キサヒドロピリミジン−2,6−シオンー1−イル)−
1,3,4−チアジアゾール−5−オン 04−メチル−2−(3−メチル−5−ヒドロキシイミ
ダゾリジン−2−オン−1−イル)−1゜3.4−チア
ジアゾール−5−オン 04−メチル−2−(3−エチル−5−ヒドロキシイミ
ダゾリジン−2−ケン−1−イル)−1゜3.4−チア
ジアゾール−5−オン 04−イソブチル−2−く3−メチル−5−ヒドロキシ
イミダゾリジン−2−オン−1−イル)−1,3,4−
チアジアゾール−5−オン04−シクロへキシル−2−
(3−メチル−5−ヒドロキシイミダゾリジン−2−オ
ン−1−イル)−’1.3.4−チアジアゾールー5−
オン04−フェニル−2−(3−メチル−5−ヒドロキ
シイミダゾリジン−2−オン−1−イル)−1,3,4
−チアジアゾール−5−オン04−メチル−2−(3−
イソプロピル−5−ヒドロキシイミダゾリジン−2−オ
ン−1−イル)−1,3,4−チアジアゾール−5−オ
ン04−メチル−2−(3−シクロへキシル−5−ヒド
ロキシイミダゾリジン−2−オン−1−イル)−1,3
,4−チアジアゾール−5−オン04−メチル−2−(
3−メチル−6−ヒドロキシへキサヒドロビリミジン−
2−オン−1−イル)=1.3.4−チアジアゾール−
5−オン04−メチル−2−(3−イソブチル−6−ヒ
ドロキシヘキサヒドロビリミジンー2−オン−1−イル
)−1,3,4−チアジアゾール−5−オン 04−イソブチル−2−(3−メチル−6−ヒドロキシ
ヘキサヒドロビリミジンー2−オン−1−イル)−1,
3,4−チアジアゾール−5−オン 04−シクロへキシル−2−(3−メチル−6−ヒドロ
キシへキサヒドロピリミジン−2−オン−1−イル)−
1,3,4−チアジアゾール−5−オン 本発明はまた前記一般式(I)で示される1゜3.4−
チアジアゾール−5−オン誘導体を有効成分とする除草
剤に関する。
04-methyl-2-(3-methylimidazolidine-2,
5-dion-1-yl)-1,3,4-thiadiazol-5-one 04-isobutyl-2-(3-methylimidazolidine-
2,5-dion-1-yl)-1,3゜4-thiadiazol-5-one 04-cyclohexyl-2-(3-methylimidazolidin-2,5-dion-1-yl)-1゜3.4-thiadiazol-5-one 04-phenyl-2-(3-methylimidazolidine-2
,5-dion-1-yl)-1,3,4-thiadiazol-5-one04-Methyl-2-(3-isopropylimidazolidin-2,5-dion-1-yl)-1,3゜4 -thiadiazol-5-one o4-methyl-2-(3-cyclohexylimidazolidin-2,5-dion-1-yl)-1゜3.4-thiadiazol-5-one o4-methyl-2-(3- sec-Butylimidazolidin-2,5-dione-1-yl)-1,3゜4-thiadiazol-5-one 04-Methyl-2-(3-ethoxycarbonylmethylimidazolidine-2,5-dione-1) -il)-1,3,
4-thiadiazol-5-one 04-methyl-2-(3
-1-toxic carbonylethylimidazolidine-2,5-
dion-1-yl)-1,3,4-thiadiazole-5
-one04-Methyl-2-(3-methylhexahydropyrimidine-2,6-thion-1-yl)-1゜3.4-
Thiadiazol-5-one 04-isobutyl-2-(3-cyclohexylhexahydropyrimidin-2,6-thion-1-yl 11.3.
4-Thiadiazol-5-one 04-Methyl-2-(3-ethoxycarbonylmethylhexahydropyrimidin-2,6-thion-1-yl)-
1,3,4-thiadiazol-5-one 04-Methyl-2-(3-methyl-5-hydroxyimidazolidin-2-one-1-yl)-1゜3.4-thiadiazol-5-one 04- Methyl-2-(3-ethyl-5-hydroxyimidazolidin-2-ken-1-yl)-1゜3.4-thiadiazol-5-one 04-isobutyl-2-methyl-5-hydroxyimidazo lysin-2-one-1-yl)-1,3,4-
Thiadiazol-5-one 04-cyclohexyl-2-
(3-Methyl-5-hydroxyimidazolidin-2-one-1-yl)-'1.3.4-thiadiazole-5-
04-phenyl-2-(3-methyl-5-hydroxyimidazolidin-2-one-1-yl)-1,3,4
-thiadiazol-5-one 04-methyl-2-(3-
Isopropyl-5-hydroxyimidazolidin-2-one-1-yl)-1,3,4-thiadiazol-5-one 04-Methyl-2-(3-cyclohexyl-5-hydroxyimidazolidin-2-one -1-yl)-1,3
,4-thiadiazol-5-one04-methyl-2-(
3-Methyl-6-hydroxyhexahydrobyrimidine-
2-one-1-yl) = 1.3.4-thiadiazole-
5-one 04-Methyl-2-(3-isobutyl-6-hydroxyhexahydrobyrimidin-2-one-1-yl)-1,3,4-thiadiazol-5-one 04-isobutyl-2-(3 -methyl-6-hydroxyhexahydrobyrimidin-2-one-1-yl)-1,
3,4-thiadiazol-5-one 04-cyclohexyl-2-(3-methyl-6-hydroxyhexahydropyrimidin-2-one-1-yl)-
1,3,4-Thiadiazol-5-one The present invention also provides 1゜3.4-one represented by the general formula (I).
The present invention relates to a herbicide containing a thiadiazol-5-one derivative as an active ingredient.

本発明の化合物は、タカサブロウ、アオビユ、クサネム
、スズメノテツポウ、タデ、ヨモギ、オオアレチノギク
、ギシギシ、アゼナ、キカシグサ、ノビエ、メヒシバ、
オヒシバ、カヤツリグサ等の雑草に対して強力な除草効
果を示すので、それらの雑草の生育が有害となるミカン
、リンゴ、ダイス、トウモロコシ、桑、茶、水稲等の農
作物の生産や景観上有害な雑草の防除に有用である。
The compounds of the present invention include hawkweed, blueberry, kusanemu, sparrow gnome, polygonum, artemisia, argentina, japonica, azalea, japonica, japonica, japonica,
It has a strong weed-killing effect on weeds such as cypress and cyperus, and the growth of these weeds is harmful to the production and landscape of agricultural crops such as tangerines, apples, dice, corn, mulberry, tea, and paddy rice. It is useful for controlling.

本発明化合物を除草剤として施用するに当っては、本発
明化合物をそのまま用いてもよいが、一般には通常農薬
の製剤上使用される補助剤と混合していずれの剤型とし
ても使用することができる。
When applying the compound of the present invention as a herbicide, the compound of the present invention may be used as it is, but in general, it may be mixed with an adjuvant commonly used in the formulation of agricultural chemicals and used in any dosage form. I can do it.

その中でも乳剤、水和剤、粒剤の形態が好適に用いられ
る。この際、効果の安定性及び効果の向上を期するため
の補助剤としては、例えばケイソウ土、カオリン、クレ
ー、ベントナイト、ホワイトカーボン、タルク等の増量
剤、ポリオキシエチレンアルキルエーテル、ポリオキシ
エチレンアルキルフェニルエーテル、ポリオキシエチレ
ンソルビタン脂肪酸エステル、ポリオキシエチレン脂肪
酸エステル、アルキルベンゼンスルホン酸ナトリウム、
リグニンスルホン酸ナトリウム、アルキル硫酸ナトリウ
ム、ポリオキシエチレンアルキル硫酸ナトリウム等の非
イオン系あるいは陰イオン系界面活性剤、キジロール、
アセトン、メタノール、エタノール、イソプロパツール
、ジオキサン、ジメチルホルムアミド、ジメチルスルホ
キサイド、四塩化炭素等の有機溶媒等が使用される。
Among these, emulsion, wettable powder, and granule forms are preferably used. At this time, examples of auxiliary agents to improve stability and effectiveness include fillers such as diatomaceous earth, kaolin, clay, bentonite, white carbon, and talc, polyoxyethylene alkyl ether, and polyoxyethylene alkyl ether. Phenyl ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene fatty acid ester, sodium alkylbenzene sulfonate,
Nonionic or anionic surfactants such as sodium lignin sulfonate, sodium alkyl sulfate, sodium polyoxyethylene alkyl sulfate, Kijirol,
Organic solvents such as acetone, methanol, ethanol, isopropanol, dioxane, dimethylformamide, dimethyl sulfoxide, and carbon tetrachloride are used.

本発明の除草剤組成物の配合としては、有効成分が約1
〜90重量%、好ましくは約5〜70重量%になるよう
に補助剤を添加することによって製剤される。加用適量
は薬剤の製剤形態、施用方法、施用時期、対象雑草の種
類ならびに特に除草効果に影響を与えやすい気象条件、
土壌条件等によってそれぞれ異なるものであり、広い範
囲内から適宜選択されるが、一般的には有効成分量とし
て約5〜400a/a程度、好ましくは約10〜100
(J/a程度が散布される。
The herbicide composition of the present invention is formulated so that the active ingredient is about 1
It is formulated by adding adjuvants to 90% by weight, preferably about 5 to 70% by weight. The appropriate amount to be applied depends on the drug formulation, application method, application time, type of target weed, and weather conditions that tend to affect the herbicidal effect.
They vary depending on soil conditions, etc., and are appropriately selected from a wide range, but generally the amount of active ingredients is about 5 to 400 a/a, preferably about 10 to 100 a/a.
(About J/a is sprayed.

以下に実施例、処方例及び試験例を挙げて本発明を更に
詳しく説明する。
The present invention will be explained in more detail by giving Examples, Prescription Examples, and Test Examples below.

実施例1 4−フェニル−2−(3−メチルイミダゾリジン−2,
5−ジオン−1−イル)−1,3,4−チアジアゾール
−5−オンの製造 2−フェニルカルバモイル−4−フェニル−1゜3.4
−チアジアゾール−5−オン19.7g<0.063モ
ル)、N−メチルグリシンエチルエステル塩酸塩11.
2g (0,073モル)及びトリエチルアミン13.
9g (0,138モル)をアセトニトリル300m!
2に加え、9時間還流した。反応終了後、減圧下でアセ
トニトリルを除去し、残渣にクロロホルム200鶴を加
え、IN−塩酸水、炭酸水素ナトリウム水溶液及び水で
洗浄後、硫酸マグネシウムで乾燥した。濾過後クロロホ
ルム溶液からクロロホルムを除去し油状物を得た。この
油状物をシリカゲルカラムクロマトグラフィー(溶媒、
ベンゼン:酢酸エチル=4 : 1 )で精製して、白
色結晶15(lを得た(収率81.9%)。融点164
〜165℃。
Example 1 4-phenyl-2-(3-methylimidazolidine-2,
Preparation of 2-phenylcarbamoyl-4-phenyl-1°3.4
-thiadiazol-5-one 19.7 g<0.063 mol), N-methylglycine ethyl ester hydrochloride 11.
2g (0,073 mol) and triethylamine 13.
9g (0,138 mol) in 300ml of acetonitrile!
2 and refluxed for 9 hours. After the reaction was completed, acetonitrile was removed under reduced pressure, and chloroform was added to the residue, which was washed with IN-hydrochloric acid solution, sodium bicarbonate aqueous solution, and water, and then dried over magnesium sulfate. After filtration, chloroform was removed from the chloroform solution to obtain an oily substance. This oil was purified by silica gel column chromatography (solvent,
Purification with benzene:ethyl acetate=4:1) gave white crystals 15(1) (yield: 81.9%). Melting point: 164
~165℃.

この結晶の重クロロホルム中でのNMRは次の様に示し
た。
NMR of this crystal in deuterated chloroform was shown as follows.

63、O8ppm (s 、  3H)δ4.o7pp
m (s 、  2H)δ 7,2〜8.0ppm  
(m 、  5H)元素分析値(C+ 2 H+ o 
Nt Oa 5=290.31> 分析値 C;49.54  H;  3.45  N;
19,11%理論値 C:49.65  H:  3.
47  N;19,30%以上の結果より υ を確認した。
63, O8ppm (s, 3H) δ4. o7pp
m (s, 2H) δ 7.2 ~ 8.0 ppm
(m, 5H) Elemental analysis value (C+ 2 H+ o
Nt Oa 5=290.31> Analysis value C; 49.54 H; 3.45 N;
19.11% theoretical value C: 49.65 H: 3.
47 N: 19. υ was confirmed from the results of 30% or more.

実施例2 4−シクロへキシル−2−(3−メチルイミダゾリジン
−2,5−ジオン−1−イル)−1゜3.4−チアジア
ゾール−5−オンの製造2−イソシアナート−4−シク
ロへキシル−1゜3.4−チアジアゾール−5−オン1
9.8g(0,088モル)、N−メチルグリシンエチ
ルエステル塩酸塩15.9g (0,104モル)及び
トリエチルアミン20(J  (0,198モル)をア
セトニトリル300m12に加え3時間還流した。
Example 2 Preparation of 4-cyclohexyl-2-(3-methylimidazolidin-2,5-dion-1-yl)-1°3.4-thiadiazol-5-one 2-isocyanato-4-cyclo Hexyl-1゜3.4-thiadiazol-5-one 1
9.8 g (0,088 mol), N-methylglycine ethyl ester hydrochloride 15.9 g (0,104 mol) and triethylamine 20(J (0,198 mol)) were added to 300 ml of acetonitrile and refluxed for 3 hours.

反応終了後、減圧下でアセトニトリルを除去し、残漬に
クロロホルム200鵬を加え、1N−塩酸水、炭酸水素
ナトリウム水溶液及び水で洗浄後、硫酸マグネシウムで
乾燥した。濾過後クロロホルム溶液からクロロホルムを
除去し油状物を得た。
After the reaction was completed, acetonitrile was removed under reduced pressure, 200 g of chloroform was added to the residue, washed with 1N hydrochloric acid, aqueous sodium bicarbonate and water, and dried over magnesium sulfate. After filtration, chloroform was removed from the chloroform solution to obtain an oily substance.

この油状物をシリカゲルカラムクロマトグラフィー(溶
媒、ベンゼン:酢酸エチル=4:1)で精製して白色結
晶23(]を得た(収率88.4%)。
This oil was purified by silica gel column chromatography (solvent: benzene:ethyl acetate = 4:1) to obtain white crystals 23 (yield: 88.4%).

融点128〜129.5℃。Melting point: 128-129.5°C.

この結晶の重クロロホルム中でのN M Rは次の様に
示した。
The NMR of this crystal in deuterated chloroform was shown as follows.

δ0,9〜2.lppm  (m 、 10H)63、
O8ppm (s、3H) δ4.O7ppm (s 、  2H)δ 3,9〜4
.61)11m  (fil  、  IH)元素分析
値(C+ 2 H+ s Nt 03S−296,35
8) 分析値 C; 48,71  H:  5.39  N
 ; 18.74%理論値 C; 48,63  H:
  5.44  N ; 18,91%以上の結果より υ を確認した。
δ0,9~2. lppm (m, 10H)63,
O8ppm (s, 3H) δ4. O7ppm (s, 2H) δ 3,9~4
.. 61) 11m (fil, IH) Elemental analysis value (C+ 2 H+ s Nt 03S-296,35
8) Analysis value C; 48,71 H: 5.39 N
; 18.74% theoretical value C; 48,63 H:
5.44 N; 18. υ was confirmed from the results of 91% or more.

実施例3 4−フェニル−2−(3−メチル−5−ヒドロキシイミ
ダゾリジン−2−オン−1−イル)−1,3,4−チア
ジアゾール−5−オンの製造4−フェニル−2−(3−
メチルイミダゾリジン−2,5−ジオン−1−イル)−
1,3,4−チアジアゾール−5−;tン9.9g (
0,034モル)をメタノール200鵬に溶解し、冷却
下で0.813の水素化ホウ素ナトリウムを加えた。室
温で4時間撹拌後、減圧下でメタノールを除去し、残渣
にクロロホルム200m12を加えた。水洗後、硫酸マ
グネシウムで乾燥した。濾過後クロロホルムを除去し油
状物を得た。この油状物をシリカゲルカラムクロマトグ
ラフィー(溶媒、クロロホルム:酢酸エチル=4:1)
で精製し白色結晶9gを得たく収率90.9%)。融点
178.5〜179.5℃。
Example 3 Preparation of 4-phenyl-2-(3-methyl-5-hydroxyimidazolidin-2-one-1-yl)-1,3,4-thiadiazol-5-one 4-phenyl-2-(3 −
Methylimidazolidine-2,5-dione-1-yl)-
1,3,4-thiadiazole-5-;ton 9.9g (
0.034 mol) was dissolved in 200 mol of methanol and 0.813 mol of sodium borohydride was added under cooling. After stirring at room temperature for 4 hours, methanol was removed under reduced pressure, and 200 ml of chloroform was added to the residue. After washing with water, it was dried with magnesium sulfate. After filtration, chloroform was removed to obtain an oily substance. This oil was subjected to silica gel column chromatography (solvent, chloroform:ethyl acetate = 4:1).
The product was purified to obtain 9 g of white crystals (yield 90.9%). Melting point: 178.5-179.5°C.

この結晶の重クロロホルム中でのNMRは次の様に示し
た。
NMR of this crystal in deuterated chloroform was shown as follows.

62.92ppm (s 、  3H)δ3,2〜4.
Oppm  (m 、  2H)66.001)l)[
11(m 、  IH)66.6ppm (m 、  
IH) δ  7,2〜8 、lppm   (m  、   
5H)元素分析値(C+ 2 H+ 2 Nt 03S
=292.326) 分析値 C:49.38  H:  4.03  N:
19.04%理論値 C; 49.31  H:  4
.14  N : 19.17%以上の結果より を確認した。
62.92ppm (s, 3H) δ3,2-4.
Oppm (m, 2H)66.001)l)[
11 (m, IH) 66.6 ppm (m,
IH) δ 7,2~8, lppm (m,
5H) Elemental analysis value (C+ 2 H+ 2 Nt 03S
=292.326) Analysis value C: 49.38 H: 4.03 N:
19.04% theoretical value C; 49.31 H: 4
.. 14 N: 19.17% or more was confirmed.

実施例4〜14 実施例1〜3と同様の操作で実席例4〜14の化合物を
製造した。物性及びNMRデーターを第1・表に示した
Examples 4 to 14 Compounds of Examples 4 to 14 were produced in the same manner as in Examples 1 to 3. The physical properties and NMR data are shown in Table 1.

処方例 1 (30%乳剤) く重1〒i部) 実施例1の化合物        30ポリオキシエチ
レンノニル フェニルエーテル        10ジメチルホルム
アミド      20キシレン          
  40処方例 2 (50%水和剤) 実施例2の化合物        50リグニンスルホ
ン酸ナトリウム   1ドデシルベンゼンスルホン酸 ナトリウム            4クレー    
          45処方例 3 (10%粒剤) 実施例3の化合物        10リグニンスルホ
ン酸ナトリウム   0.5ドデシルベンゼンスルホン
酸 ナトリウム            2ケイソウ土  
         27.5ベントナイト      
    60尚、乳剤の場合は各成分を均一に混合溶解
し、水和剤の場合は均一に混合粉砕してそれらを得るこ
とができる。粒剤の場合には各成分を均一に混合し、水
を加えて充分混練したのち造粒し、ついで細かく切断し
て粒状のものとし、乾燥して製造される。
Formulation example 1 (30% emulsion) 1 i part) Compound of Example 1 30 polyoxyethylene nonylphenyl ether 10 dimethylformamide 20 xylene
40 Formulation Example 2 (50% hydrating powder) Compound of Example 2 50 Sodium ligninsulfonate 1 Sodium dodecylbenzenesulfonate 4 Clay
45 Formulation Example 3 (10% granules) Compound of Example 3 10 Sodium ligninsulfonate 0.5 Sodium dodecylbenzenesulfonate 2 Diatomaceous earth
27.5 bentonite
60 In the case of an emulsion, each component can be uniformly mixed and dissolved, and in the case of a wettable powder, it can be obtained by uniformly mixing and pulverizing. In the case of granules, they are produced by uniformly mixing each component, adding water and thoroughly kneading, granulating, cutting into small pieces to form granules, and drying.

試験例 1 (茎葉処理テスト) 1/2000aのワグナ−ポットに殺菌した沖積土壌を
入れ、第2表に示す供試植物の種子を播種し各植物がほ
ぼ一定の大きさくほぼ2〜3葉期)に達したとき、実施
例に示す方法で得た化合物を有効成分とする乳剤を処方
例1に準じて製剤し、各々有効成分が100g、/aと
なるように水で希釈したものを植物の茎葉全面が充分一
様に濡れるように散布した。散布後、3週間目に各植物
に対する除草活性をしらべた。結果を第2表に示す。
Test Example 1 (Stem and Leaf Treatment Test) Sterilized alluvial soil was placed in a 1/2000a Wagner pot, and seeds of the test plants shown in Table 2 were sown to ensure that each plant was approximately the same size and at the 2-3 leaf stage. ), an emulsion containing the compound obtained by the method shown in the example as an active ingredient is prepared according to Formulation Example 1, and diluted with water so that each active ingredient is 100 g/a. The spray was applied so that the entire surface of the stems and leaves were thoroughly and uniformly wetted. Three weeks after spraying, the herbicidal activity against each plant was examined. The results are shown in Table 2.

尚、除草活性は肉眼観察により、つぎの基準に従って無
処理の場合と対比した指数で評価した。
The herbicidal activity was evaluated by visual observation using an index compared to that of no treatment according to the following criteria.

(指数)    (除草活性) O変化なし 1    1〜24%阻害 2    25〜49%阻害 3     50〜74%阻害 4    75〜90%阻害 5      完全枯死 第  2  表 上表において供試植物A−Hは次の植物である。(Index) (Herbicidal activity) No change in O 1 1-24% inhibition 2. 25-49% inhibition 3. 50-74% inhibition 4. 75-90% inhibition 5 Complete withering Table 2 In the above table, test plants A to H are the following plants.

A・・・アオビユ  B・・・クサネムC・・・ノビエ
   D・・・ダイコンE・・・ソバ    F・・・
アサカオG・・・コムギ   H・・・タカサブロウ試
験例 2 (土壌処理テスト) 1/2000aのワグナ−ポットに殺菌した沖積土壌を
入れ、第3表に示す供試植物の種子を播梗して、約0.
5〜1.0CIIIE!土した。ついで実施例に示す方
法で得た化合物を有効成分とする水和剤を処方例2に準
じて製剤し、各々有効成分が100g、/aとなるよう
に水で希釈し、これを土壌表面が均一に濡れるように散
布した。散布後3週間目に各植物に対する除草活性をし
らべた。結果を第3表に示す。評価の基準は試験例1と
同じである。
A...Aobiyu B...Kusanemu C...Novie D...Japanese radish E...Buckwheat F...
Asakao G: Wheat H: Takasaburo Test Example 2 (Soil Treatment Test) Sterilized alluvial soil was placed in a 1/2000a Wagner pot, and seeds of the test plants shown in Table 3 were sown. Approximately 0.
5~1.0CIIIE! It was soil. Next, wettable powders containing the compounds obtained by the method shown in the examples as active ingredients were prepared according to Formulation Example 2, diluted with water so that each active ingredient was 100 g/a, and the soil surface was Spread it evenly to get it wet. Three weeks after spraying, the herbicidal activity against each plant was examined. The results are shown in Table 3. The evaluation criteria were the same as in Test Example 1.

第  3  表 供試植物A−Gは試験例2で用いたものと同じである。Table 3 Test plants A to G are the same as those used in Test Example 2.

試験例3 (潅水処理テスト) 115000aのワグナ−ポットに水田土壌を入れ、さ
らにその表層にそれぞれ、ノビエ、タマガヤツリ、アゼ
ナ及びキカシグサの種子が混入している土を入れたのち
、2葉期の水稲苗を移植し、水深を3cmに保った。つ
いで実施例に示す方法で得た化合物を有効成分とする粒
剤を処方例3に準じて製剤し、水稲移植後、各々有効成
分が50−a/aとなるように均一に散布し、薬剤施用
後3週間口に各植物に対する除草活性をしらべた。結果
を第4表に示す。評価の基準は試験?A1と同じである
Test Example 3 (Irrigation treatment test) Paddy soil was put into a 115,000a Wagner pot, and soil mixed with seeds of Japanese wildflower, Japanese cypress, azalea, and Kikashigusa were added to the surface layer, and then paddy rice at the two-leaf stage was grown. Seedlings were transplanted and the water depth was maintained at 3 cm. Next, granules containing the compound obtained by the method shown in the example as an active ingredient are prepared according to Formulation Example 3, and after transplanting paddy rice, they are uniformly dispersed so that the active ingredient is 50-a/a. Three weeks after application, the herbicidal activity against each plant was examined. The results are shown in Table 4. Is the evaluation standard based on exams? It is the same as A1.

第  4  表 供試植物C,I〜には次の通りである。Table 4 The test plants C, I~ are as follows.

C・・・ノビエ  I・・・タマガヤツリJ・・・アゼ
ナ  K・・・キカシグサ(以 上) 代理人 弁理士 三 枝 英 二パ■ 2
C...Nobie I...Tamagayatsuri J...Azena K...Kikashigusa (and above) Agent Patent attorney Hide Saegusa Nipa ■ 2

Claims (1)

【特許請求の範囲】 ■ 一般式 〔式中、R1は低級アルキル基、シクロアルキル基又は
フェニル基を、R2は低級アルキル基又は低級アルコキ
シカルボニル低級アルキル基を示す。Aは>C=O基又
は’>CH−OH基を、nは1又は2を示す。〕 で表わされる1、3.4−チアジアゾール−5−オン誘
導体。 ■ 一般式 〔式中、R1は低級アルキル基、シクロアルキル基又は
フェニル基を示す。〕 で表わされる1、3.4−チアジアゾール−5=オン誘
導体と一般式 〔式中、R2は低級アルキル基又は低級アルコキシカル
ボニル低級アルキル基を、R3は低級アルキル基を示す
。nは1又は2を示す。〕で表わされるアミノカルボン
酸エステル誘導体とを反応させることを特徴とする特許 〔式中、R+、R2及びnは上記に同じ。〕で表わされ
る1、3.4−チアジアゾール−5−オン誘導体の製造
法。 ■ 一般式 ) 〔式中、R1は低級アルキル基、シクロアルキル基又は
フェニル基を、R21ま低級アルキル基又は低級アルコ
キシカルボニル低級アルキル基を示す。nは1又は2を
示す。〕 で表わされる1、3.4−チアジアゾール−5−オン誘
導体を還元することを特徴とする一般式 〔式中、R+ 、R2及びnは上記に同じ。〕で表わさ
れる1、3.4−チアジアゾール−5−オン誘導体の製
造法。 ■ 一般式 〔式中、R1は低級アルキル基、シクロアルキル基又は
フェニル基を、R2は低級アルキル基又は低級アルコキ
シカルボニル低級アルキル基を示す。Aは>C=O基又
は;CH−OH基を、0は1又は2を示す。〕 で表わされる1、3.4−チアジアゾール−5−オン誘
導体を有効成分とする除草剤。
[Claims] ■ General formula [wherein R1 represents a lower alkyl group, cycloalkyl group, or phenyl group, and R2 represents a lower alkyl group or a lower alkoxycarbonyl lower alkyl group. A represents >C=O group or '>CH-OH group, and n represents 1 or 2. ] A 1,3,4-thiadiazol-5-one derivative represented by: (2) General formula [In the formula, R1 represents a lower alkyl group, a cycloalkyl group, or a phenyl group. ] A 1,3,4-thiadiazol-5=one derivative represented by the general formula [wherein R2 represents a lower alkyl group or a lower alkoxycarbonyl lower alkyl group, and R3 represents a lower alkyl group]. n represents 1 or 2. [In the formula, R+, R2 and n are the same as above. ] A method for producing a 1,3,4-thiadiazol-5-one derivative. (2) General Formula) [In the formula, R1 represents a lower alkyl group, a cycloalkyl group, or a phenyl group, and R21 represents a lower alkyl group or a lower alkoxycarbonyl lower alkyl group. n represents 1 or 2. ] A general formula characterized by reducing a 1,3,4-thiadiazol-5-one derivative represented by [where R+, R2 and n are the same as above]. ] A method for producing a 1,3,4-thiadiazol-5-one derivative. (2) General formula [In the formula, R1 represents a lower alkyl group, a cycloalkyl group, or a phenyl group, and R2 represents a lower alkyl group or a lower alkoxycarbonyl lower alkyl group. A represents >C=O group or ;CH-OH group, and 0 represents 1 or 2. ] A herbicide containing a 1,3,4-thiadiazol-5-one derivative represented by the following as an active ingredient.
JP58084641A 1983-05-13 1983-05-13 1,3,4-thiadiazol-5-one derivative, its preparation, and herbicide containing said derivative as active component Pending JPS59210083A (en)

Priority Applications (1)

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JP58084641A JPS59210083A (en) 1983-05-13 1983-05-13 1,3,4-thiadiazol-5-one derivative, its preparation, and herbicide containing said derivative as active component

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58084641A JPS59210083A (en) 1983-05-13 1983-05-13 1,3,4-thiadiazol-5-one derivative, its preparation, and herbicide containing said derivative as active component

Publications (1)

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JPS59210083A true JPS59210083A (en) 1984-11-28

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