Copper‐Promoted Oxidative Amide‐Assisted Radical Selenylation of Anilides and N‐Arylsulfonamides with Diselenides

A direct selenylation of N ‐arylsulfonamides and anilides using environmentally friendly and readily available copper promoted assisted by amide is presented. This method provided convenient access for various selenylation reactions, demonstrating a wide range of substrates and strong tolerance to various functional groups. According to the selection of reaction substrates, products can be isolated to obtain a regioselectivity ortho ‐, para ‐, or unprecedented ortho , para ‐diselenylation products. Such transformation was elucidated by a proposed copper‐promoted amide‐assisted radical mechanism.