首页> 外国专利> Prepn. of thiophene-2-acetic acid cpds. - via alpha-arylthio-thiophene-2-acetic acid and 2-di:halovinyl-thiophene cpds.

Prepn. of thiophene-2-acetic acid cpds. - via alpha-arylthio-thiophene-2-acetic acid and 2-di:halovinyl-thiophene cpds.

机译：准备噻吩-2-乙酸cpds。 -通过α-芳硫基噻吩-2-乙酸和2-二：卤代芳基噻吩cpds。

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摘要

New thiophene derivs. of formulae (I) and (II) are claimed: (where R1 and R2 are H, halogen, alkyl, aroyl or acyl, R3 is arylthio, R4 is H or alkyl, X is Cl, Br or I). Also claimed are processes for preparing cpds. (I) and (II) and for converting them to known thiophene-2-acetic acid derivs. The various thiophene-2-acetic acid derivs. are useful in the prepn. of synthetic penicillin(s) and cephalosporin(s). A typical cpd. (I) is alpha-phenylthio-2-thiophene-acetic acid. In an example, this is prepd. from alpha-trichloromethyl-2-thiophene-methanol and thiophenol.

机译：新的噻吩衍生。要求保护式（I）和（II）的式（I，其中R 1和R 2为H，卤素，烷基，芳酰基或酰基，R 3为芳硫基，R 4为H或烷基，X为Cl，Br或I）。还要求保护用于制备cpds的方法。（I）和（II）并将其转化为已知的噻吩-2-乙酸衍生物。各种噻吩-2-乙酸衍生物。在准备中很有用。合成青霉素和头孢菌素。典型的cpd。（I）是α-苯硫基-2-噻吩乙酸。在一个示例中，这是准备的。由α-三氯甲基-2-噻吩甲醇和硫酚组成。

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公开/公告号FR2464951A1

专利类型
公开/公告日1981-03-20

原文格式PDF
申请/专利权人 SAGAMI CHEMICAL RESEARCH CENTER;
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申请/专利号FR19800024903
发明设计人 KIYOSHI KONDO TAMOTSU FUJISAWA DAIEI TSUNEMOTO ET KUNIKAZU SAKAI;FUJISAWA TAMOTSU;TSUNEMOTO DAIEI;SAKAI KUNIKAZU;
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申请日1980-11-24
分类号C07D333/16;
国家 FR
入库时间 2022-08-22 15:03:34

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