Synthesis and characterization of manganese (II) catalyst loaded on SBA-15 support and its application in the synthesis of quinoxaline and pyridopyrazine heterocycles in aqueous medium

Document Type : Research Article

Authors

University of Tehran

Abstract

A manganese (II) catalyst loaded onto the SBA-15 support containing a bidentate N-O Schiff-base ligand was prepared and it was applied in the synthesis of quinoxaline, pyrazine and pyrido pyrazine heterocycles. The nanocatalyst was characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), infrared spectroscopy and nitrogen adsorption/desorption isotherm. The results from X-ray diffraction and transmission electron microscopy show that the textile properties of SBA-15 are preserved after grafting of manganese (II) complex. A variety of aforementioned heterocycles were synthesized easily and with good yields under green conditions in aqueous medium via ring condensation of 1,2-diamines and 1,2-diketones in the presence of catalytic amounts of catalyst.

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Nashrieh Shimi va Mohandesi Shimi Iran

Articles in Press, Accepted Manuscript
Available Online from 03 November 2021

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