Catechol violet as new, efficient, and versatile ligand for Cu(I)-catalyzed C–S coupling reactions

Combination of CuI and Catechol violet (CuI-CV) was employed as catalyst for the first time in the C–S coupling reaction of a wide variety of aromatic halides, such as aryl iodides, bromo pyridines, activated aryl chlorides, and vinyl iodide with thiols to afford the corresponding thioethers in good to excellent yields. Broad range of functional group tolerance present in both the coupling partners has been observed in this reaction protocol.