Nano-Fe3O4@TiO2/Cu2O core-shell composite: A convenient magnetic separable catalyst for synthesis of diarylethers


Magnetic nano-Fe3O4@TiO2/Cu2O core-shell composite had been successfully applied as catalyst  for cross-coupling reaction of various aryl halides and phenols. All the reactions proceed under optimum conditions using DMF as solvent at 140ºC in the presence of 30 mg of nano-magnetic catalyst and completed in good to high yields.  The catalyst was conventionally recovered using an external magnet and was reused at least in four successive runs, without appreciable loss of activity.