Nano copper oxide catalyzed synthesis of symmetrical diaryl sulfides under ligand free conditions

Abstract

Potassium thiocyanate acts as an efficient sulfur surrogate in C–S cross-coupling reactions mediated by recyclable copper oxide nanoparticles under ligand free conditions. This protocol avoids foul smelling thiols, for the synthesis of a variety of symmetrical diaryl sulfides, via the cross-coupling of different aryl halides with potassium thiocyanate, affording corresponding products in moderate to excellent yields.

Keywords

• aryl halides
• aryl sulfides
• copper oxide
• cross-coupling
• ligand free
• potassium thiocyanate
• recyclable