Efficient Asymmetric Copper(I)-Catalyzed Henry Reaction Using Chiral N-Alkyl-C1-tetrahydro-1,1′-bisisoquinolines
作者:Yao Qiong ji、Gao Qi、Zaher M. A. Judeh
DOI:10.1002/ejoc.201100579
日期:2011.7.14
closely related chiral N-alkyl-C1-tetrahydro-1,1′-bisisoquinoline ligands only differing in the steric bulk of the alkyl groups has been examined in the asymmetric Henry reaction. A complex derived from the (R)-N-methyl-1′,2′,3′,4′-tetrahydro-1,1′-bisisoquinoline and copper(I) chloride proved to be a very efficient catalyst system that can promote the reaction of a wide range of aromatic and aliphatic
在不对称亨利反应中研究了一系列密切相关的手性 N-烷基-C1-四氢-1,1'-双异喹啉配体,仅在烷基的空间体积上有所不同。由 (R)-N-methyl-1',2',3',4'-tetrahydro-1,1'-bisisoquinoline 和氯化铜 (I) 衍生的复合物被证明是一种非常有效的催化剂体系,可以促进多种芳香族和脂肪族醛的反应以高产率(高达 99 %)、出色的对映选择性(高达 94 % ee)和适中的非对映选择性(高达 1.6:1)得到预期的硝基醇产物。这种催化剂体系非常通用,不需要用于活化的添加剂,并且操作也简单,因为没有采取特殊的预防措施来排除反应烧瓶中的水分或空气。