Rhodium-Catalyzed Intermolecular Oxidative Cross-Coupling of (Hetero)Arenes with Chalcogenophenes

A straightforward and efficient method for the rhodium-catalyzed intermolecular oxidative cross-coupling of arenes and heteroarenes with thio- and selenophene derivatives (chalcogenophenes) via double C–H bond cleavage has been developed by using Cu(OAc)₂/AgSbF₆ as an oxidant. The reaction is applicable to a wide range of (hetero)arenes carrying a directing group and chalcogenophenes to yield substituted biaryl heterocyclic derivatives and oligothiophene derivatives in moderate to high yields

The Palladium-Catalyzed Intermolecular C–H Chalcogenation of Arenes

Palladium catalyzes the intermolecular chalcogenation of carbazole, 2-phenylpyridine, benzo­[<i>h</i>]­quinolone, and indole derivatives with disulfides and diselenides via selective C–H bond cleavage, providing a convenient route to thio and selenoethers

Nickel-Catalyzed Direct Thiolation of C(sp³)–H Bonds in Aliphatic Amides

Nickel-catalyzed thiolation of the inactivated methyl C­(sp³)–H bonds of aliphatic amides with disulfide is described. It is a novel strategy for the synthesis of thioethers with the ultimate goal of generating thioether carboxylic acids with various functional groups