Kakulapati Rama Rao

Nano Indium Oxide as a Recyclable Catalyst for C−S Cross-Coupling of Thiols with Aryl Halides under Ligand Free conditions

An efficient ligand-free C-S cross-coupling of aryl halides with aromatic/alkyl thiols has been developed using a catalytic amount of nanocrystalline indium oxide as a recyclable catalyst with KOH as the base in DMSO at 135 degrees C. A variety of aryl sulfides can be synthesized in excellent yields utilizing this protocol.

Copper Oxide Nanoparticle-Catalyzed Coupling of Diaryl Diselenide with Aryl Halides under Ligand-Free Conditions

A new, efficient and ligand-free cross-coupling reaction of aryl halides and diaryl diselenides using a catalytic amount of nanocrystalline CuO as a recyclable catalyst with KOH as the base in DMSO at 110 degrees C is reported. This protocol has been utilized for the synthesis of a variety of aryl selenides in excellent yields from the readily available aryl halides and diaryl diselenides.