申请人:Nisshin Flour Milling Co., Ltd.
公开号:US03959349A1
公开(公告)日:1976-05-25
A new process for the production of a 2-(4-alkylphenyl)-propionic acid known as a valuable anti-inflammatory agent is now provided, which comprises treating an alkyl 2-hydroxy-3-(4-alkylphenyl)-3-butenoate, a new compound, with an alkali metal alcoholate in an alcohol to give the corresponding alkyl 3-methyl-3-(4-alkylphenyl)-pyruvate, also a new compound, which is then hydrolysed to liberate the corresponding 3-methyl-3-(4-alkylphenyl)-pyruvic acid, and then oxidising the liberated pyruvic acid compound to the desired 2-(4-alkylphenyl)-propionic acid. This new process is operable in a facile way with a high yield of the desired product and is much suitable for a commercial practice than the prior art methods.
提供了一种新的制备2-(4-烷基苯基)丙酸的过程,该酸是一种有价值的抗炎剂,其包括将一种新化合物烷基2-羟基-3-(4-烷基苯基)-3-丁烯酸酯与碱金属醇盐在醇中反应,得到相应的新化合物烷基3-甲基-3-(4-烷基苯基)丙酮酸,然后水解以释放相应的3-甲基-3-(4-烷基苯基)丙酮酸,接着将释放的丙酮酸化合物氧化成所需的2-(4-烷基苯基)丙酸。这一新过程操作简便,所需产品的产率高,比现有技术方法更适合商业实践。