Asymmetric vinylogous Michael reaction of α,β-unsaturated ketones with γ-butenolide under multifunctional catalysis
作者:Huicai Huang、Feng Yu、Zhichao Jin、Wenjun Li、Wenbin Wu、Xinmiao Liang、Jinxing Ye
DOI:10.1039/c0cc01054e
日期:——
general and directorganocatalytic asymmetric vinylogousMichael reaction of gamma-butenolide with alpha,beta-unsaturated ketones was investigated with a multifunctional primary amine salt as catalyst. The reaction enables straightforward access toward synthetically versatile gamma-substituted butenolides from simple 2(5H)-furanone with satisfactory yields, diastereo- and enantioselectivities (up to 30:1