申请人:Takasago International Corporation
公开号:EP2762467A1
公开(公告)日:2014-08-06
Disclosed is a method for producing an optically active 2-arylpiperidinium salt, comprising asymmetrically hydrogenating a pyridinium salt in the presence of an iridium complex and hydrogen, the 2-arylpiperidinium salt being represented by the following general formula (1):
wherein R1, R2, X, *, and m are as described in Description, the pyridinium salt being represented by the following general formula (2):
wherein R1, R2, X, and m are as described in Description, and the iridium complex being represented by the following general formula (3):
IrH(Z)(Q)(PP*) (3),
wherein Z, PP*, and Q are as described in Description, or the following general formula (4):
[IrH(PP*)}2(µ-Z)3]Z (4),
wherein Z and PP* are as described in Description.
本发明公开了一种生产具有光学活性的 2-芳基哌啶鎓盐的方法,包括在铱络合物和氢的存在下不对称地氢化吡啶鎓盐,2-芳基哌啶鎓盐由以下通式 (1) 表示:
其中 R1、R2、X、* 和 m 如说明书所述,吡啶鎓盐由下式通式 (2) 表示:
其中 R1、R2、X 和 m 如描述中所述,铱络合物由以下通式 (3) 表示:
IrH(Z)(Q)(PP*) (3)、
其中 Z、PP* 和 Q 如描述中所述,或如下通式 (4):
[IrH(PP*)}2(µ-Z)3]Z (4)、
其中 Z 和 PP* 如描述中所述。