An efficient synthesis of biaryls through a gold‐catalyzed oxidative cross‐coupling of arenes with strong electron‐deprived aryl boronates is presented herein. Regio‐ and chemocontrol are achieved by the selective activation of these coupling partners by gold at different oxidation states. Under reaction conditions devoid of basic additives or directinggroups, the role of acetato ligand as an internal
Au-Catalyzed Cross-Coupling of Arenes via Double C–H Activation
作者:Xacobe C. Cambeiro、Nanna Ahlsten、Igor Larrosa
DOI:10.1021/jacs.5b10593
日期:2015.12.23
The first methodology for Au(I/III)-catalyzed oxidative cross-coupling of arenes via double C-H activation has been developed. The reaction is fully selective for the cross-coupling between electron-rich hetero-/carbocyclic arenes and electron-poor arenes bearing relatively acidic C-H bonds: The inherently high cross-selectivity of the system obviates the need for directing groups or a large excess of one of the coupling partners.