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• W4387452910 abstract "Despite binuclear Cu active sites present in some biological and heterogeneous catalysts, the development of chiral binuclear copper catalysts is still in its infancy and remains a formidable challenge. A notable example is that the asymmetric propargylic substitution catalyzed by a chiral binuclear Cu complex is still unknown, although some kinds of in-situ-assembled binuclear Cu species have 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 derivatives via propargylic substitution. Mechanistic investigations suggested that the binuclear Cu core shows a bifunctional role in coordination with acetylide and allenylidene ligands. These findings shed light onto the long-standing mechanistic ambiguity, providing solid support for the proposal that the binuclear Cu core can be crucial for substrate activation and selectivity control in catalysis." @default.
• W4387452910 created "2023-10-10" @default.
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• W4387452910 date "2023-10-01" @default.
• W4387452910 modified "2023-10-11" @default.
• W4387452910 title "Well-defined chiral dinuclear copper complexes in enantioselective propargylic substitution: For a long-standing supposition on binuclear mechanism" @default.
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• W4387452910 doi "https://doi.org/10.1016/j.chempr.2023.09.006" @default.
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