PROCESS FOR PREPARING OPTICALLY ACTIVE 2-PIPERAZINECARBOXYLIC ACID DERIVATIVES
申请人:TORAY INDUSTRIES, INC.
公开号:EP0906906A1
公开(公告)日:1999-04-07
Optically-active 2-piperazinecarboxylic acid derivatives are produced through diastereomer salt resolution using optically-active acidic amino acid derivative as the resolving reagent. In this method, the recovery of the resolving reagent used is high, and the production efficiency to produce the optically-active products is high.
As the optically-active acidic amino acid derivatives, usable are optically-active, N-acylated acidic amino acid derivatives and optically-active, N-sulfonylated acidic amino acid derivatives.