Photocatalytic Redox-Neutral and Reductive Deoxygenative Alkylation of Benzyl Alcohols Using N-Acyl Carbamothioates as Radical Precursors

Abstract

Herein, we report a photocatalytic redox-neutral and reductive deoxygenative alkylation of N-acyl carbamothioates from benzylic alcohols, with substituted Hantzsch esters and allylic sulfones to afford unsymmetrical 1,2-diaryl ethanes and allylarylmethanes, respectively. This protocol facilitates facile deoxyalkylation of primary, secondary, and tertiary benzylic alcohol-derived N-acyl carbamothioates, which features mild reaction conditions, broad functional group tolerance, and the obviation of external S/O trapping reagents as well as transition metal-coupling catalysts.