申请人:Meiji Seika Kaisha, Ltd.
公开号:EP1097918A1
公开(公告)日:2001-05-09
A process for selectively eliminating a compound of general formula (II) from a mixture of a compound of general formula (I) with the compound of general formula (II). This process comprises reacting the compound of general formula (II) with a tertiary amine and a nucleophilic agent and then washing and/or crystallizing the thus obtained compound to thereby separate the same from the mixture. A process for producing a compound represented by general formula (I) which is free from any mutagen is also provided. In these formulae, R1 represents alkyl, alkyl carbonyl or alkoxycarbonyl; and Hal represents halogeno.
一种从通式(I)化合物与通式(II)化合物的混合物中选择性地剔除通式(II)化合物的工艺。该工艺包括使通式(II)化合物与叔胺和亲核剂反应,然后洗涤和/或结晶由此获得的化合物,从而将其从混合物中分离出来。本发明还提供了一种不含任何诱变剂的通式(I)化合物的生产工艺。在这些通式中,R1 代表烷基、烷基羰基或烷氧羰基;Hal 代表卤素。