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

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Jafarpour Farnaz; Sharifi Mahdieh; Nikjoo Razieh

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Scientific Information Database

ISSN: 2588-4824

Journal Paper

Paper Information

Journal: Nashrieh Shimi va Mohandesi Shimi Iran Year:2023 | Volume:42 | Issue:1 Page(s): 83-93

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Title

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

Author(s)

Jafarpour Farnaz | Sharifi Mahdieh | Nikjoo Razieh | Issue Writer Certificate

Keywords

Heterogeneous catalystQ4

Mn(II) complexQ4

SBA-15Q4

QuinoxalineQ4

PyridopyrazineQ4

waterQ4

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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