Electrophotochemical Dehydrogenative Diarylation of C(sp³)-H with Electron-Rich Arenes

Although C(sp³)-H bond arylation has been extensively investigated in synthetic chemistry, the direct diarylation of such bonds has scarcely been explored. Herein, we report an efficient electrophotochemical strategy for C(sp³)-H diarylation under mild conditions. A broad array of benzyl-1,1'-biphenyl derivatives can be efficiently synthesized using this method, affording moderate to high yields. Notably, the method features broad functional group compatibility and facile scalability and eliminates the need for metal catalysts and stoichiometric external oxidants.