Methionine-Coated Fe3O4 Nanoparticles: An Efficient and Reusable Nanomagnetic Catalyst for the Synthesis of 5-Substituted 1H-Tetrazoles

Abstract

Methionine-coated Fe3O4 nanoparticles, a magnetically reusable and environmentally friendly heterogeneous catalyst, was synthesized. The new catalyst was characterized by FT-IR spectra, XRD, SEM, and EDX analysis and was used to catalyze the cycloaddition of nitriles and sodium azide in DMSO at 120°C to give the corresponding 5-substituted 1H-tetrazoles. Methionine-coated Fe3O4 nanoparticles proved to be highly efficient for this organic reaction. The catalyst can be easily separated and reused several times without loss of activity. The proposed procedure also offers several benefits such as quick reaction, high yields, clean process, low-cost heterogeneous catalyst, low loading of catalyst, and simple operation.