METHOD FOR MANUFACTURING OPTICALLY ACTIVE PYRROLIDONE CARBOXYLIC ACID OR ALKALI METAL SALT THEREOF

To provide a method by which pyrrolidone carboxylic acid or alkali metal salt thereof, each having extremely high chemical purity and optical purity, can be manufactured simply in high yield.SOLUTION: A method for manufacturing optically active pyrrolidone carboxylic acid or alkali metal salt thereo...

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Bibliographic Details
Main Author SUGIMOTO TAKANORI
Format Patent
LanguageEnglish
Japanese
Published 28.01.2021
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:To provide a method by which pyrrolidone carboxylic acid or alkali metal salt thereof, each having extremely high chemical purity and optical purity, can be manufactured simply in high yield.SOLUTION: A method for manufacturing optically active pyrrolidone carboxylic acid or alkali metal salt thereof includes filtering a precipitate by adding hydroxide of alkali metal to a solution of optically active pyrrolidone carboxylic acid zinc salt dihydrate.SELECTED DRAWING: None 【課題】化学純度及び光学純度が極めて高いピロリドンカルボン酸またはそのアルカリ金属塩を簡便かつ収率良く製造できる方法を提供すること。【解決手段】光学活性ピロリドンカルボン酸亜鉛塩２水和物の溶液にアルカリ金属の水酸化物を添加し、析出物を濾去する工程を包含する、光学活性ピロリドンカルボン酸またはそのアルカリ金属塩の製造方法。【選択図】なし
Bibliography:Application Number: JP20170195265