Regio- and chemoselective transfer hydrogenation of isoquinolinium salts catalyzed by [Cp*RhCl2]2 using HCOOH-Et3N (5:2) as a hydrogen source was realized. A variety of N-methyl- and N-benzyl-1,2,3,4-tetrahydroisoquinoline alkaloids were obtained in high yields by the present catalyst system.
使用HCOOH-Et3N (5:2)作为氢源,以[Cp*RhCl2]2为催化剂,实现了对
异喹啉盐的区域和
化学选择性转移氢化。通过该催化体系获得了多种高产率的N-甲基和N-苄基-1,2,3,4-
四氢异喹啉生物碱。