申请人:Kaneka Corporation
公开号:EP2261205A1
公开(公告)日:2010-12-15
The present application relates to a method of (S)-3-(1-cyano-1,1-diphenylmethyl)-pyrrolidine by reacting an (S)-1-protected-3-(sulfonyloxy)-pyrrolidine having an easily deprotectable protecting group with diphenylacetonitrile in the presence of a base to obtain an (S)-1-protected-3-(1-cyano-1,1-diphenylmethyl)-pyrrolidine and then deprotecting the obtained compound under a mild condition. According to the method of the present invention, it is possible to efficiently produce (S)-3-(1-cyano-1,1-diphenylmethyl)-pyrrolidine, which is an important intermediate in the process of producing a muscarinic receptor antagonist such as darifenacin.
本申请涉及一种(S)-3-(1-氰基-1,1-二苯基甲基)-吡咯烷的方法,该方法是在碱存在下,使具有易脱保护基的(S)-1-保护-3-(磺酰氧基)-吡咯烷与二苯基乙腈反应,得到(S)-1-保护-3-(1-氰基-1,1-二苯基甲基)-吡咯烷,然后在温和条件下对得到的化合物进行脱保护。根据本发明的方法,可以有效地生产(S)-3-(1-氰基-1,1-二苯基甲基)-吡咯烷,它是生产毒蕈碱受体拮抗剂(如达非那新)过程中的重要中间体。