Well-defined chiral dinuclear copper complexes in enantioselective propargylic substitution: For a long-standing supposition on binuclear mechanism
作者:Qilong Cai、Houqiang Rao、Shi-Jun Li、Yu Lan、Kuiling Ding、Xiaoming Wang
DOI:10.1016/j.chempr.2023.09.006
日期:2024.1
frequently been proposed as active intermediates. Herein, we report a series of binuclear copper catalysts supported by chiral benzo [c] cinnoline dioxazoline frameworks, which demonstrated high efficiency in (dynamic) kinetic resolution of propargylic alcohol derivativesvia propargylic substitution. Mechanistic investigations suggested that the binuclear Cu core shows a bifunctional role in coordination with
Highly Enantioselective Copper-Catalyzed Propargylic Substitution of Propargylic Acetates with 1,3-Dicarbonyl Compounds
作者:Fu-Zhong Han、Fu-Lin Zhu、Ya-Hui Wang、Yuan Zou、Xin-Hu Hu、Song Chen、Xiang-Ping Hu
DOI:10.1021/ol403469m
日期:2014.1.17
A chiral tridentate ketimineP,N,N-ligand has been successfully applied in the copper-catalyzedenantioselectivepropargylic substitution of propargylic acetates with a variety of β-dicarbonyl compounds, in which excellent enantioselectivities (up to >99% ee) and high yields have been obtained.