Immobilized Cu‐Schiff Base Complex on MCM‐41as Catalyst in the Synthesis of Benzimidazole Derivatives

Abstract

AbstractBenzimidazole derivatives were synthesized through the coupling ofO‐phenylenediamine and substituted benzaldehydes by using a heterogeneous catalyst MCM@CP@PYO@Cu, which was synthesized by anchoring the Cu‐Schiff base complex on the surface of chloro‐functionalized MCM‐41 via grafting method. FT‐IR, TGA, low angle Powder XRD, SEM, TEM, MP‐AES and N2 adsorption‐desorption analysis were used in the characterization of MCM@CP@PYO@Cu.98 % of product yield was obtained with this catalyst. The synthesized heterogeneouscatalyst can be reused up to 7 runs with insignificant change in its catalytic properties. Reusability, high surface area, low metal loading, short reaction time and good to excellent product yield are the main advantages of the present catalyst.