tert‐Butyl Hydroperoxide Promoted Pd‐catalyzed Homocoupling of Arylboronic Acids

Abstract

tert‐Butyl hydroperoxide was found to be an efficient oxidant for the Pd‐catalyzed homo‐coupling of arylboronic acids. The reaction conditions are extremely green and mild: very low catalyst loading, in air, in water, at room temperature, short reaction time and without any additive such as base or ligand. The method is highly functional group tolerant, allowing a variety of arylboronic acids to transform into the corresponding biaryls in good to excellent yields.