JP2006298872A - Manufacturing method of 1-fluoro-1-phenylthioethene - Google Patents

Manufacturing method of 1-fluoro-1-phenylthioethene Download PDF

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JP2006298872A
JP2006298872A JP2005125988A JP2005125988A JP2006298872A JP 2006298872 A JP2006298872 A JP 2006298872A JP 2005125988 A JP2005125988 A JP 2005125988A JP 2005125988 A JP2005125988 A JP 2005125988A JP 2006298872 A JP2006298872 A JP 2006298872A
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fluoro
potassium
lithium
phenylthioethene
sodium
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Akihiko Kojima
昭彦 小島
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Kyorin Pharmaceutical Co Ltd
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Kyorin Pharmaceutical Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an industrially practicable and efficient manufacturing method of 1-fluoro-1-phenylthioethene that has been conventionally manufactured only under a severe condition and in a bad yield. <P>SOLUTION: 1-Fluoro-1-phenylthioethene is industrially advantageously and efficiently manufactured by reacting a 1-fluoro-2-halogeno-1-phenylthioethane derivative with a base such as potassium t-butoxide or potassium hydroxide. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、1-フルオロ-1-フェニルチオエテンの効率的な製造方法に関する。 The present invention relates to an efficient method for producing 1-fluoro-1-phenylthioethene.

1-フルオロ-1-フェニルチオエテンは各種医薬品、生理活性物質および機能性材料の製造中間体として重要であり、その製造はフェニルチオアニオンと1,2-ジブロモ-1-フルオロエテンとの反応((方法1)非特許文献1)または加熱条件下に1-ジフェニルメチルシリル-1-フルオロエテンとS-フェニルベンゼンチオスルホネートとの反応((方法2)非特許文献2)によって実施されていた。 1-Fluoro-1-phenylthioethene is important as an intermediate for the production of various pharmaceuticals, physiologically active substances, and functional materials, and its production involves the reaction of phenylthioanion with 1,2-dibromo-1-fluoroethene ( (Method 1) Non-patent document 1) or the reaction of 1-diphenylmethylsilyl-1-fluoroethene and S-phenylbenzenethiosulfonate under heating conditions ((Method 2) Non-patent document 2).

しかし、方法1では極めて収率が低く、また方法2は加熱操作の必要性やアトムエコノミーの観点から効率的ではない。
Zh. Org. Khim., 27, 2362(1991). J. Fluorine Chem., 118, 99(2002).
However, method 1 has a very low yield, and method 2 is not efficient from the viewpoint of the necessity of heating operation and atom economy.
Zh. Org. Khim., 27, 2362 (1991). J. Fluorine Chem., 118, 99 (2002).

本発明が解決しようとする問題点は、工業的に実施容易で効率的な1-フルオロ-1-フェニルチオエテンの製造方法を提供するところにある。 The problem to be solved by the present invention is to provide an industrially easy and efficient method for producing 1-fluoro-1-phenylthioethene.

本発明者は、1-フルオロ-2-ハロゲノ-1-フェニルチオエタン誘導体を塩基と反応させることにより、効率良く1-フルオロ-1-フェニルチオエテンが製造でき、工業的に実施容易な製造方法となり得ることを見出し、本発明を完成したものである。   The present inventor can efficiently produce 1-fluoro-1-phenylthioethene by reacting a 1-fluoro-2-halogeno-1-phenylthioethane derivative with a base, and is an industrially easy production method The present invention has been completed.

即ち、本発明は、
1)
一般式(1)
That is, the present invention
1)
General formula (1)

Figure 2006298872
(式中、Xはハロゲン原子を示す。)で表される1-フルオロ-2-ハロゲノ-1-フェニルチオエタン誘導体を塩基と反応させることを特徴とする
式(2)
Figure 2006298872
(Wherein X represents a halogen atom), a 1-fluoro-2-halogeno-1-phenylthioethane derivative represented by the formula (2) is reacted with a base:

Figure 2006298872
で表される1-フルオロ-1-フェニルチオエテンの製造方法、
Figure 2006298872
A process for producing 1-fluoro-1-phenylthioethene represented by:

2)塩基がカリウムt−ブトキシド、カリウムエトキシド、カリウムメトキシド、水酸化カリウム、ナトリウムt−ブトキシド、ナトリウムエトキシド、ナトリウムメトキシド、水酸化ナトリウム、リチウムt−ブトキシド、リチウムエトキシド、リチウムメトキシド、または水酸化リチウムである上記1)記載の製造方法、
に関するものである。
2) Base is potassium t-butoxide, potassium ethoxide, potassium methoxide, potassium hydroxide, sodium t-butoxide, sodium ethoxide, sodium methoxide, sodium hydroxide, lithium t-butoxide, lithium ethoxide, lithium methoxide Or the production method according to 1) above, which is lithium hydroxide,
It is about.

本発明の1-フルオロ-1-フェニルチオエテンの製造方法は、従来のフェニルチオアニオンと1,2-ジブロモ-1-フルオロエテンとの反応による方法に比べて著しく収率が高い。また、従来の、加熱操作下に1-ジフェニルメチルシリル-1-フルオロエテンとS-フェニルベンゼンチオスルホネートとの反応による方法に比べて、加熱操作を必要とせず、またアトムエコノミーの観点からも効率的であり優れた方法である。これにより、1-フルオロ-1-フェニルチオエテンが工業的に有利に製造することが可能である。   The production method of 1-fluoro-1-phenylthioethene according to the present invention has a significantly higher yield than the conventional method of reaction of phenylthioanion and 1,2-dibromo-1-fluoroethene. Compared to the conventional method of reacting 1-diphenylmethylsilyl-1-fluoroethene with S-phenylbenzenethiosulfonate under heating, it does not require heating and is more efficient from the viewpoint of atom economy. It is a good method. Thereby, 1-fluoro-1-phenylthioethene can be produced industrially advantageously.

本発明の一般式(1)で示される原料化合物1-フルオロ-2-ハロゲノ-1-フェニルチオエタン誘導体は公知または公知の方法によって容易に得ることができる(例えば、J. Org. Chem., 55, 2973(1990).)。   The starting compound 1-fluoro-2-halogeno-1-phenylthioethane derivative represented by the general formula (1) of the present invention can be obtained by a known or easily known method (for example, J. Org. Chem., 55, 2973 (1990).).

一般式(1)中、Xで示されるハロゲン原子とはフッ素原子、塩素原子、臭素原子またはヨウ素原子を示す。 In general formula (1), the halogen atom represented by X represents a fluorine atom, a chlorine atom, a bromine atom or an iodine atom.

一般式(1)で示される1-フルオロ-2-ハロゲノ-1-フェニルチオエタン誘導体には、不斉中心に基づく光学異性体が存在し得るが、本発明にはこれらの光学異性体のいずれをも使用することができ、またそれらの任意の比率を示す混合物またはラセミ体を使用することも可能である。 The 1-fluoro-2-halogeno-1-phenylthioethane derivative represented by the general formula (1) may have an optical isomer based on an asymmetric center. In the present invention, any of these optical isomers may be present. Can also be used, and it is also possible to use mixtures or racemates showing any ratio thereof.

本反応は、−40〜110℃、好ましくは−15〜40℃で円滑に進行する。
本反応に用いる塩基としては、炭酸リチウム、水酸化リチウム、リチウムメトキシド、リチウムエトキシド、リチウムt-ブトキシド、ブチルリチウム、水素化リチウム、リチウムジイソプロピルアミド、リチウムヘキサメチルジシラジド、炭酸ナトリウム、水酸化ナトリウム、ナトリウムメトキシド、ナトリウムエトキシド、ナトリウムt-ブトキシド、水素化ナトリウム、ナトリウムヘキサメチルジシラジド、炭酸カリウム、水酸化カリウム、カリウムメトキシド、カリウムエトキシド、カリウムt-ブトキシド、水素化カリウム、カリウムヘキサメチルジシラジド、トリエチルアミン、ジイソプロピルエチルアミン、ピリジン、ジアザビシクロ[5.4.0]−7−ウンデセン、ジアザビシクロ[4.3.0]−5−ノネン、ホスファゼンベースまたはペンタイソプロピルグアニジン等が例示できる。好ましくは、カリウムt−ブトキシド、カリウムエトキシド、カリウムメトキシド、水酸化カリウム、ナトリウムt−ブトキシド、ナトリウムエトキシド、ナトリウムメトキシド、水酸化ナトリウム、リチウムt−ブトキシド、リチウムエトキシド、リチウムメトキシド、または水酸化リチウムが用いられる。
This reaction proceeds smoothly at -40 to 110 ° C, preferably -15 to 40 ° C.
Examples of the base used in this reaction include lithium carbonate, lithium hydroxide, lithium methoxide, lithium ethoxide, lithium t-butoxide, butyl lithium, lithium hydride, lithium diisopropylamide, lithium hexamethyldisilazide, sodium carbonate, water Sodium oxide, sodium methoxide, sodium ethoxide, sodium t-butoxide, sodium hydride, sodium hexamethyldisilazide, potassium carbonate, potassium hydroxide, potassium methoxide, potassium ethoxide, potassium t-butoxide, potassium hydride , Potassium hexamethyldisilazide, triethylamine, diisopropylethylamine, pyridine, diazabicyclo [5.4.0] -7-undecene, diazabicyclo [4.3.0] -5-nonene, phosphazenbe Or penta isopropyl guanidine and the like. Preferably, potassium t-butoxide, potassium ethoxide, potassium methoxide, potassium hydroxide, sodium t-butoxide, sodium ethoxide, sodium methoxide, sodium hydroxide, lithium t-butoxide, lithium ethoxide, lithium methoxide, Or lithium hydroxide is used.

本反応に用いられる溶媒としては、反応に関与しない不活性な溶媒、例えばヘキサン、トルエン、アセトニトリル、テトラヒドロフラン、ジオキサン、エチルエーテル、t−ブチルメチルエーテル、ジメトキシエタンまたはジクロロメタンなどが用いられる。 As a solvent used in this reaction, an inert solvent that does not participate in the reaction, for example, hexane, toluene, acetonitrile, tetrahydrofuran, dioxane, ethyl ether, t-butyl methyl ether, dimethoxyethane, or dichloromethane is used.

実施例
以下の実施例により本発明の有用性を示すが、本発明は実施例に限定されるものではない。
EXAMPLES The utility of the present invention is shown by the following examples, but the present invention is not limited to the examples.

1−フルオロ−1−フェニルチオエテンの合成
1−クロロ−2−フルオロ−2−フェニルチオエタン(27.6g)をテトラヒドロフラン(500mL)に溶解し、氷水浴上で冷却しながら、カリウムt−ブトキシド(19.5g)を加えた。5℃で1時間撹拌後、テトラヒドロフランを留去した残渣にヘキサンを加えて攪拌し、不溶物を濾去した。濾液を濃縮した残渣をシリカゲルカラム(溶出溶媒:ヘキサン)で精製し、淡黄色油状の1−フルオロ−1−フェニルチオエテンを14.7g(収率66%)得た。
MS(EI)m/z=154(M).
H NMR(CDCl):δ 4.97(dd、J=3.1,42.2Hz、1H)、5.11(dd、J=3.1,10.4Hz、1H)、7.26−7.39(m、3H)、7.43−7.49(m、2H).
Synthesis of 1- fluoro-1-phenylthioethene 1-Chloro-2-fluoro-2-phenylthioethane (27.6 g) was dissolved in tetrahydrofuran (500 mL) and cooled in an ice-water bath while potassium t-butoxide. (19.5 g) was added. After stirring at 5 ° C. for 1 hour, hexane was added to the residue obtained by distilling off the tetrahydrofuran and the mixture was stirred, and insoluble matter was removed by filtration. The residue obtained by concentrating the filtrate was purified by a silica gel column (elution solvent: hexane) to obtain 14.7 g (yield 66%) of 1-fluoro-1-phenylthioethene as a pale yellow oil.
MS (EI) m / z = 154 (M <+> ).
1 H NMR (CDCl 3 ): δ 4.97 (dd, J = 3.1, 42.2 Hz, 1H), 5.11 (dd, J = 3.1, 10.4 Hz, 1H), 7.26 -7.39 (m, 3H), 7.43-7.49 (m, 2H).

1-フルオロ-2-ハロゲノ-1-フェニルチオエタン誘導体を塩基と反応させることにより、効率良く1-フルオロ-1-フェニルチオエテンが製造でき、工業的に実施容易な製造方法を提供する。
By reacting a 1-fluoro-2-halogeno-1-phenylthioethane derivative with a base, 1-fluoro-1-phenylthioethene can be efficiently produced and an industrially easy production method is provided.

Claims (2)

一般式(1)
Figure 2006298872
(式中、Xはハロゲン原子を示す。)で表される1-フルオロ-2-ハロゲノ-1-フェニルチオエタン誘導体を塩基と反応させることを特徴とする
式(2)
Figure 2006298872
で表される1-フルオロ-1-フェニルチオエテンの製造方法。
General formula (1)
Figure 2006298872
(Wherein X represents a halogen atom), a 1-fluoro-2-halogeno-1-phenylthioethane derivative represented by the formula (2) is reacted with a base:
Figure 2006298872
A process for producing 1-fluoro-1-phenylthioethene represented by the formula:
塩基がカリウムt−ブトキシド、カリウムエトキシド、カリウムメトキシド、水酸化カリウム、ナトリウムt−ブトキシド、ナトリウムエトキシド、ナトリウムメトキシド、水酸化ナトリウム、リチウムt−ブトキシド、リチウムエトキシド、リチウムメトキシドまたは水酸化リチウムである請求項1記載の製造方法。 Base is potassium t-butoxide, potassium ethoxide, potassium methoxide, potassium hydroxide, sodium t-butoxide, sodium ethoxide, sodium methoxide, sodium hydroxide, lithium t-butoxide, lithium ethoxide, lithium methoxide or water The production method according to claim 1, which is lithium oxide.
JP2005125988A 2005-04-25 2005-04-25 Manufacturing method of 1-fluoro-1-phenylthioethene Pending JP2006298872A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008137899A (en) * 2006-11-29 2008-06-19 Kureha Corp Method for producing 4-methylthio-3-butenylisothiocyanate
JP2008137898A (en) * 2006-11-29 2008-06-19 Kureha Corp Method for producing 4-methylthio-3-butenylisothiocyanate, its synthetic intermediate, and antimicrobial composition containing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008137899A (en) * 2006-11-29 2008-06-19 Kureha Corp Method for producing 4-methylthio-3-butenylisothiocyanate
JP2008137898A (en) * 2006-11-29 2008-06-19 Kureha Corp Method for producing 4-methylthio-3-butenylisothiocyanate, its synthetic intermediate, and antimicrobial composition containing the same

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