Preparing carboxylic acids from glycidonitriles through enol acylates
申请人:The Upjohn Company
公开号:US03975431A1
公开(公告)日:1976-08-17
Process for preparing carboxylic acids by converting a glycidonitrile to the enol acylate via hydrohalogenation, acylation and dehydrohalogenation procedures, and conversion of the enol acylate to the carboxylate salt with a base and of the salt to the carboxylic acid with acid. Cyanide content in the mixture is destroyed by adding persulfate or hypochlorite salts. This process, can be used, e.g., to prepare 2-(4'-isobutylphenyl)propionic acid, now known generically as ibuprofen, a highly active anti-inflammatory drug, as well as a host of other useful carboxylic acids.