l-Methionine-Zr complex supported on magnetic ZnFe₂O₄ as a novel, green, and efficient heterogeneous magnetic nanocatalyst for the synthesis of 1H-tetrazole and polyhydroquinoline derivatives

A novel, efficient and recoverable heterogeneous nanocatalyst for green chemistry was designed. ZnFe 2 O 4 @SiO 2 @ l -methionine-Zr MNPs were prepared in a short, simple way. The synthesized catalyst was assessed for the synthesis of tetrazole and polyhydroquinoline derivatives.