申请人:KANEKA CORPORATION
公开号:EP0900787A1
公开(公告)日:1999-03-10
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.
R represents a 1-cyano-1,1-diphenylmethyl, 1-carbamoyl-1,1-diphenylmethyl, n-butyryloxy, methanesulfonyloxy or p-toluenesulfonyloxy group.
本发明的目的是提供一种生产通式(2)的吡咯烷衍生物或其盐的工艺,该工艺简单经济,生产效率高,产率高。
本发明包括一种生产通式(2)吡咯烷衍生物或其盐的工艺,该工艺包括在至少一种选自盐酸、硫酸、磷酸、对甲苯磺酸、甲磺酸、乙酸、正丁酸、三氟乙酸和草酸组成的组中的原酸存在下,使用金属催化剂将通式(1)化合物进行氢解。
R 代表 1-氰基-1,1-二苯甲基、1-氨基甲酰基-1,1-二苯甲基、正丁酰氧基、甲磺酰氧基或对甲苯磺酰氧基。