Copper Immobilized on Isonicotinic Acid Hydrazide Functionalized Nano-Magnetite as a Novel Recyclable Catalyst for Direct Synthesis of Phenols and Anilines

摘要

A new nano-catalyst which contains a core of magnetic Fe3O4 nanoparticles(NPs)has been fabricated.It is covered via isonicotinic acid hydrazide and copper(Cu).In this sense,Isonicotinic acid hydrazide(INH)is applied because of its ability as a bidendental ligand and pharmaceutical activity in order to be used for the complexion and connection of Cu on Fe3O4 surface for the synthesis of Fe3O4@INH@Cu(INH= Isonicotinic acid hydrazide).In this regard,Fe3O4@INH@Cu as a heterogeneous nanocatalyst for the cross-coupling of aryl halides with potassium hydroxide(KOH)as the hydroxide source and ammonium acetate(NH4OAc),as the amine source in the presence of cesium carbonate(Cs2CO3)in polyethylene glycol(PEG-400),has been applied.The catalyst is a new magnetically recyclable catalytic system with easy preparation and purification,high activity,eco-friendly and economic advantages.