申请人:REUTER CHEMISCHE APPARATEBAU KG
公开号:US10464898B2
公开(公告)日:2019-11-05
The present invention relates to a process for the preparation of enantiomerically enriched 3-aminopiperidine, and in particular of its R-enantiomer (R)-3-aminopiperidine. The invention also relates to an enantiomerically enriched intermediate of said process and to specific acid-addition salts of 3-aminopiperidine (hereinafter also APIP) that are useful for obtaining a single enantiomer of APIP, and to crystalline (R)-3-aminopiperidine-dihydrochloride-monohydrate and crystalline (S)-3-aminopiperidine-di-hydrochloride-monohydrate.
本发明涉及一种制备对映体富集的 3-氨基哌啶,特别是其 R-对映体 (R)-3- 氨基哌啶的工艺。本发明还涉及上述工艺的对映体富集中间体,以及有助于获得 APIP 单个对映体的 3-氨基哌啶(以下简称 APIP)的特定酸加成盐,以及结晶的 (R)-3- 氨基哌啶二盐酸盐一水合物和结晶的 (S)-3- 氨基哌啶二盐酸盐一水合物。