Abstract
A simple method for the oxidative aromatization of Hantzsch 1,4-dihydropyridines to the corresponding pyridines is described using hydrogen peroxide as green oxidant and silica vanadic acid as catalyst in acetonitrile at room temperature. The catalyst can be easily recovered and reused for 15 reaction cycles without considerable loss of activity.
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Financial support for this work by the Center of Excellence of Development of Chemical Methods (CEDCM) of Bu Ali Sina University, Hamedan, Iran is gratefully acknowledged.
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Safaiee, M., Zolfigol, M.A., Tavasoli, M. et al. Application of silica vanadic acid [SiO2-VO(OH)2] as a heterogeneous and recyclable catalyst for oxidative aromatization of Hantzsch 1,4-dihydropyridines at room temperature. J IRAN CHEM SOC 11, 1593–1597 (2014). https://doi.org/10.1007/s13738-014-0431-9
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DOI: https://doi.org/10.1007/s13738-014-0431-9