Adipic acid diester is caused to react with alkoxide M(OR)
n
, wherein R is an alkyl group and M is an alkali metal or alkaline earth metal, the reaction product is successively subjected either to coupling with halomethylstyrene followed by carbonylation, or to coupling with 2-(halomethylphenyl)propionic acid or its ester followed by decarboxylation and hydrolysis. With this process, it is possible to produce more efficiently a specific 2-substituted propionic acid, loxoprofen.
脂肪二酸二酯与烷氧基M(OR)n反应,其中R是烷基,M是碱
金属或碱土
金属,反应产物随后要么与卤代
甲基苯乙烯偶联,然后进行羰基化,要么与2-(卤代甲基苯基)
丙酸或其酯偶联,然后进行脱羧和
水解。通过这个过程,可以更有效地生产特定的2-取代
丙酸,
洛索洛芬。