Palladium-Catalyzed Desulfitative C—C Cross-Coupling Reaction of (Hetero)Aryl Thioesters and Thioethers with Arylsiloxanes.

The first desulfitative Hiyama-type cross-coupling protocol is reported and exemplified by the synthesis of substituted 5-chloro-3-arylpyrazinones. The method has also been successfully applied for the arylation of other (hetero)aryl thioethers and thioesters.