Deoxygenative coupling of alcohols with aromatic nitriles enabled by direct visible light excitation

Org Biomol Chem. 2023 Dec 6;21(47):9316-9320. doi: 10.1039/d3ob01676e.

Abstract

A general and practical protocol is presented for visible-light-driven deoxygenative coupling of alcohols with aromatic nitriles in the absence of external photocatalysts. Utilizing a hydroxyl activation strategy with carbon disulfide, this C(sp3)-C(sp2) constructing platform accommodates a broad scope of alcohols and aryl nitriles to deliver various alkyl-substituted arenes. Mechanism studies show that a single electron transfer event between a photoexcited aryl nitrile and a xanthate anion is key to the transformation.