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.
通过水合卤化、酰化和脱卤化程序将一种环氧丙腈转化为烯醇酰酸酯,然后将烯醇酰酸酯转化为羧酸盐,并通过碱将盐转化为羧酸。在混合物中加入过硫酸盐或次氯酸盐来破坏氰化物含量。这种方法可以用来制备2-(4'-异丁基苯基)丙酸,现在通常被称为布洛芬,这是一种高活性抗炎药,以及许多其他有用的羧酸。