申请人:Mitsubishi Rayon Co., Ltd.
公开号:EP1219593A1
公开(公告)日:2002-07-03
An industrially advantageous process for producing optically active 4-amino-2-methylbutane-1-ol which is useful as an intermediate in synthesizing optically active medicines and pesticides. Racemic 4-amino-2-methylbutane-1-ol is treated with an optically active organic acid. The diastereomeric salt thus obtained is crystallized out and subjected to solid-liquid separation to give optically active 4-amino-2-methylbutane-1-ol. The diastereomeric salt of optically active 4-amino-2-methylbutane-1-ol with an optically active reagent for optical resolution is decomposed by bringing into contact with a solvent and an alkali and subjected to solid-liquid separation, thereby recovering the optically active 4-amino-2-methylbutane-1-ol from the filtrate. Further, the filtration residue containing the alkali salt of the reagent for optical resolution obtained by the solid-liquid separation is brought into contact with a solvent and an acid. Then the reagent for optical resolution thus crystallized out is subjected to solid-liquid separation and recovered.
一种生产具有光学活性的 4-氨基-2-甲基-1-丁醇的具有工业优势的工艺,该工艺可用作合成具有光学活性的药物和杀虫剂的中间体。外消旋 4-氨基-2-甲基-1-丁醇用光学活性有机酸处理。由此得到的非对映异构盐经结晶和固液分离后,得到具有光学活性的 4-氨基-2-甲基丁烷-1-醇。光学活性 4-氨基-2-甲基丁烷-1-醇的非对映体盐与光学活性试剂进行光学分辨,通过与溶剂和碱接触进行分解,并进行固液分离,从而从滤液中回收光学活性 4-氨基-2-甲基丁烷-1-醇。然后,将含有通过固液分离获得的光学分解试剂碱式盐的过滤残渣与溶剂和酸接触。然后将结晶出的光学分解试剂进行固液分离并回收。