Visible Light Thiyl Radical-Mediated Desilylation of Arylsilanes.

A straightforward, visible-light triggered desilylation of arylsilanes by thiyl radicals is presented. Silyl groups are often used to block a reactive position in multi-step organic synthesis, for which a mild cleavage at a late-stage will provide new possibilities and disconnection routes by C -Si cleavage/deprotection. In this work, commercially available and cheap disulfides are employed for the first time in this type of C(sp )-Si bond cleavage reactions.