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Bulletin of the Chemical Society of Ethiopia

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V2O5/SiO2 as an efficient catalyst in the synthesis of 5-amino- pyrazole derivatives under solvent free condition

T. K. Khatab, A. S. Hassan, A. S. Hassan, T. S. Hafez, T. S. Hafez

Abstract


An efficient and facile approach for the synthesis of 5-aminopyrazoles from ketene S,N-acetal and hydrazine hydrate via catalytic reaction under solvent free condition has been described. V2O5/SiO2 as a heterogeneous catalyst was prepared and characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM).

               

KEY WORDS: One-pot synthesis, 5-Amino-1H-pyrazole, Hydrazine hydrate, Vanadium oxide, Silica

 

Bull. Chem. Soc. Ethiop. 2019, 33(1), 135-142

DOI: https://dx.doi.org/10.4314/bcse.v33i1.13

 




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