Synthesis and Characterization of Nanorod Magnetic Co-Fe Mixed Oxides and its Catalytic Behavior Towards One-Pot Synthesis of Polysubstituted Pyridine Derivatives

The nanorod magnetic Fe2O3@Fe3O4@Co(3)O(4)composite as a novel catalyst was synthesized and fully characterized using X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS), scanning electron microscopy (SEM), and transmission electron microscopy. Moreover, the prepared nanorod magnetic Fe2O3@Fe3O4@Co(3)O(4)composites were used as an efficient, cheap, and eco-friendly catalyst for the one-pot synthesis of polysubstituted pyridine derivatives. The catalyst is magnetically separable and recyclable up to the fourth run without significant loss of activity. The products were obtained in high yields (78%-97%) and purities via an easy workup procedure.