%0 Journal Article %T 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 %J Nashrieh Shimi va Mohandesi Shimi Iran %I Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR %Z 1022-7768 %A Jafarpour, Farnaz %A Sharifi, Mahdieh %A Nikjoo, Razieh %D 2023 %\ 05/22/2023 %V 42 %N 1 %P 83-93 %! 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 %K Heterogeneous catalyst %K Mn(II) complex %K SBA-15 %K Quinoxaline %K Pyridopyrazine %K water %R %X 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. %U https://www.nsmsi.ir/article_247078_4d5f60020ddc37f59d3f4e8fa36e919e.pdf