Process for the Preparation of Enantiomerically Enriched Indoline-2-Carboxylic Acid
申请人:De Vries Andreas Hendrikus Maria
公开号:US20090043112A1
公开(公告)日:2009-02-12
The present invention relates to a process for the preparation of an enantiomerically enriched optionally substituted indoline-2-carboxylic acid or a salt thereof, wherein an enantiomerically enriched chiral ortho-X-substituted phenylalanine compound, wherein X is a leaving group, is subjected to cyclisation, preferably at a temperature of below about 140° C., upon formation of the enantiomerically enriched indoline-2-carboxylic acid compound.
本发明涉及一种制备对映富集的可选择取代的吲哚-2-羧酸或其盐的过程,其中将对映富集的手性ortho-X-取代苯丙氨酸化合物(其中X是离去基团)进行环化,首选在约140℃以下的温度下进行,形成对映富集的吲哚-2-羧酸化合物。