Abstract

A highly efficient method is described for the copper- and solvent-free coupling reaction of various aryl halides and terminal alkynes catalyzed by polyvinyl chloride-supported palladium (II) triazole complex. The heterogeneous catalyst used exhibits good reusability for the copper-free Sonogashira reaction.

Keywords: Copper-free, sonogashira reaction, PVC-supported catalyst, aryl halides.