发明申请
US20070185337A1 Process for the preparation of optically pure 4-hydroxy-2-oxo-1-pyrrolidine acetamide 审中-公开
制备光学纯的4-羟基-2-氧代-1-吡咯烷乙酰胺的方法

Process for the preparation of optically pure 4-hydroxy-2-oxo-1-pyrrolidine acetamide
摘要:
A process for the preparation of chiral 4-hydroxy-2-oxo-1-pyrrolidine acetamide includes adding sodium cyanide together with citric acid to a solution of chiral epichlorohydrin to obtain chiral 3-chloro-2-hydroxypropionitrile by ring opening reaction of the chiral epichlorohydrin, reacting the obtained product with an alcohol containing hydrochloride gas to obtain chiral 4-chloro-3-hydroxybutyric acid ester, and reacting the obtained product in a presence of a base with glycinamide or with glycine ester accompanied by ammonolysis with ammonia to produce the targeted chiral 4-hydroxy-2-oxo-1-pyrrolidine acetamide.
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