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.
描述了一种新的过程,用于分离消旋
维拉帕米尔,该过程允许以高产率和高对映纯度获得所需的对映体。该过程使用光学活性的2,3-双[(2-
氟苯甲酰)氧基]
丁二酸作为分离剂,以
水/二甲基甲酰胺或
水/
乙腈或
水/
甲醇混合物作为反应溶剂。