Biaryl compounds serve as key structures of bioactive natural products and chiral ligands for asymmetric reactions, and as precursors for electroconductive materials due to their interesting properties. 1 This makes these compounds attractive synthetic targets. A direct and efficient route to biaryl compounds is via oxidative electron transfer of arenes. Several methods for oxidative biaryl coupling of phenol derivatives using toxic heavy metal oxidants 2., , , , , and such as ...