PROCESSES FOR PRODUCING RACEMIC PIPERIDINE DERIVATIVE AND FOR PRODUCING OPTICALLY ACTIVE PIPERIDINE DERIVATIVE

摘要

Disclosed are a method for producing racemic piperidine derivatives by processing optically-active piperidine derivatives in a hydrogen atmosphere in the presence of a reducing catalyst; and a method for producing optically-active piperidine derivatives or their acid salts by optically resolving the racemic piperidine derivatives obtained in the former method.