Processes for Producing Optically Active 1-Substituted 2-Methylpyrrolidine and Intermediate Therefor
申请人:Nishiyama Akira
公开号:US20070292926A1
公开(公告)日:2007-12-20
The present invention relates to a process for producing an optically active 1,4-pentanediol by asymmetrically reducing 5-hydroxy-2-pentanone, which is easily available at low cost. The present invention also relates to a process for producing an optically active 1-substituted 2-methylpyrrolidine including sulfonylating the optically active 1,4-pentanediol to convert it to an optically active sulfonate compound, and reacting the compound with an amine. According to the processes of the present invention, an optically active 1,4-pentanediol and an optically active 1-substituted 2-methylpyrrolidine, which are useful as an intermediate for medicines and an intermediate for agricultural chemicals, can be simply produced from an inexpensive starting material.
本发明涉及一种生产光学活性1,4-戊二醇的过程,该过程通过非对称还原低成本易得的5-羟基-2-戊酮。本发明还涉及一种生产光学活性1-取代-2-甲基吡咯烷的过程,包括将光学活性1,4-戊二醇磺酰化以转化为光学活性磺酸盐化合物,并将该化合物与胺反应。根据本发明的工艺,可以从廉价的起始材料简单地生产出作为药物中间体和农药中间体的光学活性1,4-戊二醇和光学活性1-取代-2-甲基吡咯烷。