申请人:Kaneka Corporation
公开号:US06005119A1
公开(公告)日:1999-12-21
It is an object of the present invention to provide a process for producing an pyrrolidine derivative of general formula (2) or a salt thereof in a simple and economical manner and with good productivity and high yields. The present invention consists in a process for producing a pyrrolidine derivative of the general formula (2) or a salt thereof which comprises subjecting a compound of the general formula (1) to hydrogenolysis using a metal catalyst in the presence of at least one protic acid selected from the group consisting of hydrochloric acid, sulfuric acid, phosphoric acid, p-toluenesulfonic acid, methanesulfonic acid, acetic acid, n-butyric acid, trifluoroacetic acid and oxalic acid. ##STR1## R represents a 1-cyano-1,1-diphenylmethyl, 1-carbamoyl-1,1-diphenylmethyl, n-butyryloxy, methanesulfonyloxy or p-toluenesulfonyloxy group.
本发明的目的是以简单经济的方式,高效率高产率地生产通式(2)的吡咯烷衍生物或其盐。本发明涉及一种生产通式(2)的吡咯烷衍生物或其盐的方法,包括将通式(1)的化合物在至少选自氢氯酸、硫酸、磷酸、对甲苯磺酸、甲磺酸、乙酸、正丁酸、三氟乙酸和草酸的脱氢催化剂存在下,经过氢解作用。其中,R代表1-氰基-1,1-二苯甲基、1-氨基甲酰-1,1-二苯甲基、正丁酰氧基、甲磺酰氧基或对甲苯磺酰氧基基团。