申请人:Cosma S.p.A.
公开号:EP2014644A1
公开(公告)日:2009-01-14
A new process is described for the resolution of racemic verapamil, which allows the desired enantiomer to be obtained in high yields and with high enantiomeric purity. The process uses optically active 2,3-bis[(2-fluorobenzoyl)oxy]butanedioic acid as the resolving agent, and a water/dimethylformamide or water/acetonitrile or water/methanol mixture, as the reaction solvent.
本文介绍了一种新的方法,用于分离混合物中的顺-异维拉帕米尔,该方法可以高产率地获得所需的对映体,并具有高的对映选择性。该过程使用具有光学活性的2,3-双[(2-氟苯甲酰)氧基]丁二酸作为分离剂,以及水/二甲基甲酰胺或水/乙腈或水/甲醇混合物作为反应溶剂。