Intermediates for the production of optically active cyclopropylamine derivatives and process for the production of the intermediates
申请人:Fujita Masao
公开号:US20070117988A1
公开(公告)日:2007-05-24
The present invention provides intermediates needed for production of an optically active compound represented by formula (6), which enable the compound (6) to be readily synthesized in simple production steps without optical resolution, and also provides a process for producing the intermediates.
A process for producing an optically active compound represented by formula (4):
wherein R
1
represents a protecting group for the amino group, or a salt thereof, characterized in that a reagent prepared from an titanium(IV) reagent and an alkylmetal compound is reacted with an optically active compound represented by formula (3):
wherein R
1
has the same meaning as defined above, if needed, in the presence of a Lewis acid.
本发明提供了制备光学活性化合物(式(6)所代表)所需的中间体,使得该化合物(6)能够在简单的生产步骤中无需光学分辨即可被合成,并且提供了制备这些中间体的方法。一种用于制备光学活性化合物(式(4)所代表)的方法:其中R1代表氨基保护基或其盐,其特征在于将由钛(IV)试剂和烷基金属化合物制备的试剂与光学活性化合物(式(3)所代表)反应,其中R1具有与上述定义相同的含义,必要时在Lewis酸的存在下进行反应。