Process for producing O,O'-diacyltartaric anhydride and process for
申请人:Toray Industries, Inc.
公开号:US05451687A1
公开(公告)日:1995-09-19
An industrial process for producing O,O'-diacyltartaric anhydride with high purity and high efficiency is disclosed. According to the process of the invention, a carboxylic acid of the formula (I): R.sup.1 COOH (I) (wherein R.sup.1 represents C.sub.1 -C.sub.4 alkyl group; phenyl group; or phenyl group substituted with 1-5 C.sub.1 -C.sub.4 alkyl groups or with 1-5 halogen atoms) is reacted with tartaric acid in the presence of a chlorinating agent.