tWe report here the synthesis of reduced graphene oxide supported copper nanoparticles (rGO/Cu NPs)from copper (II) sulfate pentahydrate and graphite precursors using a simple protocol. The catalyst wascharacterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer–Emmett–Teller(BET) and energy dispersive X-ray spectroscopy (EDS). The rGO/Cu NPs is proved to be a useful hetero-geneous catalyst in Cu-catalyzed formamidation and amination of arylboronic acids. The catalyst can berecovered by simple filtration from the reaction mixture and reused several times without significantloss of catalytic activity
