Highly Selective Methods for α-Alkenylation and α-Arylation of Ketones via Palladium- or Nickel-Catalyzed Cross Coupling
作者:Ei-ichi Negishi、Kazunari Akiyoshi
DOI:10.1246/cl.1987.1007
日期:1987.6.5
Two procedures for α-alkenylation and α-arylation of ketones, that permit, for the first time, introduction of a stereo-defined alkenyl group (E or Z) in the α-position of cyclic ketones in high yields with essentially complete retention (>98%) of the alkenyl stereochemistry are reported. Furthermore, the one that is represented by Eq.2 permits complete control of regiochemistry as well.
酮的 α-烯基化和 α-芳基化的两种方法,首次允许在环状酮的 α-位引入立体定义的烯基(E 或 Z),高产率且基本完全保留( >98%) 的烯基立体化学。此外,由方程 2 表示的那个也允许完全控制区域化学。