Preparation and characterization of hexamethylenetetramine‐functionalized magnetic nanoparticles and their application as novel catalyst for the synthesis of pyranopyrazole derivatives |
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| Authors: | Ramin Ghorbani‐Vaghei Vida Izadkhah |
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| Affiliation: | Faculty of Chemistry, Bu‐Ali Sina University, Hamedan, Iran |
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| Abstract: | A new magnetic catalyst was prepared through the reaction of silanol groups, on the surface of silica‐coated Fe3O4 magnetic nanoparticles, with (3‐chloropropyl)triethoxysilane followed by hexamethylenetetramine and chlorosulfonic acid. The obtained magnetic catalyst was characterized using thermogravimetric analysis, vibrating sample magnetometry, scanning electron microscopy and energy‐dispersive X‐ray analysis. Its catalytic activity was investigated in the synthesis of pyranopyrazole compounds, and the results were excellent regarding high yield of the products and short reaction time. |
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| Keywords: | green synthesis hexamethylenetetramine magnetic nanoparticles pyranopyrazole |
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