An efficient asymmetric tandem dual Michael reaction that constructs three contiguous stereocenters in acyclic open-chain systems with very high enantioselectivity and diastereoselectivity has been developed. This protocol provides a reliable and rapid approach for synthesis of chiral pyrrolidines with multiple stereocenters.
Copper-catalyzed asymmetric tandem double Michael reactions of diethylzinc to α,β-unsaturated ketones followed by trapping with nitroolefins
作者:Qiang Wang、Shuang Li、Chuan-Jin Hou、Ting-Ting Chu、Xiang-Ping Hu
DOI:10.1016/j.tet.2019.06.032
日期:2019.7
A copper catalyzed asymmetric tandem double Michael addition of diethylzinc to α,β-unsaturated ketones followed by trapping with nitroolefins has been developed using chiral P,N-ligands. The tandem products were obtained in good yields and excellent enantioselectivities with three contiguous stereocenters.