Benzimidazole 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 N 2 adsorption-desorption analysis were used in the character-
Herein, we have reported synthesis, characterization and catalytic activity of an efficient and reusable silica-based catalyst MCM@CP@PAL@Cu. This catalyst was prepared by the anchoring of Cu(II)-Schiff base complex on mesoporous MCM-41 grafted with -chloro group on the surface. The obtained catalyst was characterized with various analytical methods such as FT-IR, low angle P-XRD, TGA, N2 adsorption-desorption, SEM, TEM and MPAES. The catalyst composition and chemical state of Cu metal identified using X-ray photoelectron spectroscopy. The catalyst MCM@CP@PAL@Cu employed for the conversion of various alkenes to their epoxides using tert-butyl-hydroperoxide (TBHP) oxidant and acetonitrile as a solvent. 99% yield of the epoxide obtained with model reaction and catalyst can be reused minimum six times with same efficiencies.
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