申请人:ISHIHARA SANGYO KAISHA, LTD.
公开号:EP0512436A1
公开(公告)日:1992-11-11
A method for producing a substituted pyridine derivative of the formula (II):
wherein each of R¹, R², R³ and R⁴ is a hydrogen atom, a halogen atom or an alkyl group, and m is an integer of from 1 to 3, which comprises reducing a substituted trichloromethylpyridine derivative of the formula (I):
wherein R¹, R², R³ and R⁴ are as defined above, with use of acetic acid, hydrochloric acid or sulfuric acid, as a proton donor, and zinc, tin or a mixture thereof, as a reducing agent.
一种生产式 (II) 的取代吡啶衍生物的方法:
其中 R¹、R²、R³ 和 R⁴ 各为氢原子、卤素原子或烷基,且 m 为 1 至 3 的整数,该方法包括还原式 (I) 的取代的三氯甲基吡啶衍生物:
其中 R¹、R²、R³ 和 R⁴ 如上定义,使用乙酸、盐酸或硫酸作为质子供体,锌、锡或它们的混合物作为还原剂。