Pd-Catalyzed Dearboxylative Heck Coupling with Dioxygen as the Terminal Oxidant

[摘要]：Pd-catalyzed decarboxylative Heck coupling of aromatic carboxylic acids with various olefins is developed using O-2 as the terminal oxidant. Enhancement of O-2 pressure leads to improving reaction turnover in this transformation and allows significantly reducing catalyst loading for efficient conversion of electron-rich benzoic acids. A Pd catalyst supported by a carbene ligand enables using electron-deficient benzoic acids as coupling partners.

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