Provided is a method capable of producing a pyrrolidonecarboxylic acid or an alkali metal salt thereof having an extremely high chemical purity and an extremely high optical purity conveniently in a good yield.
A method for producing an optically active pyrrolidonecarboxylic acid or an alkali metal salt thereof, including a step of adding an alkali metal hydroxide to a solution of optically active zinc pyrrolidonecarboxylate 2 hydrate, and filtering off the precipitate.
本发明提供了一种能够以良好的收率方便地生产具有极高
化学纯度和极高光学纯度的
吡咯烷
酮羧酸或其碱
金属盐的方法。
一种生产光学活性
吡咯烷
酮羧酸或其碱
金属盐的方法,包括向光学活性
吡咯烷
酮羧酸锌 2
水合物溶液中加入碱
金属氢氧化物,并过滤沉淀的步骤。