Synthesis of Unsymmetrical Sulfides Using Ethyl Potassium Xanthogenate and Recyclable Copper Catalyst under Ligand-Free Conditions

The synthesis of unsymmetrical sulfides has been achieved in good to excellent yields with inexpensive ethyl potassium xanthogenate via cross-coupling reaction using recyclable CuO nanoparticles under ligand-free conditions.The copper oxide nanoparticles can be recovered and reused up to five cycles without loss of activity.