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
Pd/PR<sub>3</sub>-Catalyzed Cross-Coupling of Aromatic Carboxylic Acids with Electron-Deficient Polyfluoroarenes via Combination of Decarboxylation with sp<sup>2</sup> C−H Cleavage
作者:Huaiqing Zhao、Ye Wei、Jing Xu、Jian Kan、Weiping Su、Maochun Hong
DOI:10.1021/jo102175f
日期:2011.2.4
broad range of aromatic carboxylic acids, including heteroaromatic carboxylic acids, efficiently underwent decarboxylative coupling with an array of polyfluoroarenes in the presence of stoichiometric amount of silver salts to generate biaryls. Silver salts were adjusted to the reactivity of aromatic carboxylic acids to efficiently suppress the protodecarboxylation and therefore improve decarboxylative