Fe3O4/SiO2 decorated trimesic acid-melamine nanocomposite: A reusable supramolecular organocatalyst for efficient multicomponent synthesis of imidazole derivatives

This article describes supramolecular Fe 3 O 4 /SiO 2 decorated trimesic acid-melamine nanocomposite that can be prepared with features that combine properties of different materials to fabricate a structurally unique hybrid material. In particular, we have focused on design, synthesis and evaluation a heterogeneous magnetic organocatalyst with acidic functional-groups for synthesis of biologically important imidazole derivatives in good-to-excellent yields. The introduced Fe 3 O 4 /SiO 2 -TMA-Me were characterized by different techniques such as FTIR, XRD, EDX, FESEM, TEM and TGA. As a noteworthy point, the magnetic catalyst system can be recycled and reused for more than seven consecutive cycles while its high catalytic activity remains.