Enantioselective copper(II)-catalyzed conjugate addition of diethylzinc to β-substituted enones utilizing BINOL-based phosphoramidite ligands
作者:Wenxian Zhao、Tao Wang、Ruijuan Zhao、Huanping Xie、Lantao Liu
DOI:10.1016/j.tetasy.2016.01.016
日期:2016.3
A family of new chiral phosphoramidite ligands based on 3,3'-disubstituted (S)-BINOL have been successfully synthesized. The chiral phosphoramidite ligands were subsequently applied to the copper(II)-catalyzed enantioselective addition of diethylzinc to beta-substituted enones, giving the desired chiral adducts with enantioselectivities of up to 93% ee and high yields (up to 88%). (C) 2016 Elsevier Ltd. All rights reserved.