申请人:MITSUI TOATSU CHEMICALS, Inc.
公开号:EP0030474A1
公开(公告)日:1981-06-17
Production of DL-serine by heating a strong acid type cation exchange resin having aziridine-2-carboxylic acid adsorbed thereto. Specifically, an industrial process for producing DL-serine is provided which comprises treating an a-halogeno-o-aminopropionitrile or its mineral acid salt in water or a water-containing organic solvent with an alkali or alkaline earth metal hydroxide to form an alkali or alkaline earth metal aziridine-2-carboxylate, treating the reaction mixture with a strong acid type cation exchange resin to cause adsorption of aziridine-2-carboxylic acid, and thereafter heating the cation-exchange resin.
通过加热吸附有氮丙啶-2-羧酸的强酸型阳离子交换树脂生产 DL-丝氨酸。具体来说,本发明提供了一种生产 DL-丝氨酸的工业工艺,该工艺包括在水或含水有机溶剂中用碱金属或碱土金属氢氧化物处理 a-卤代-氨基丙腈或其矿物酸盐,生成碱金属或碱土金属氮丙啶-2-羧酸盐,用强酸型阳离子交换树脂处理反应混合物以吸附氮丙啶-2-羧酸,然后加热阳离子交换树脂。