Arabian Journal of Chemistry (Sep 2016)

PTA (H3PO4·12WO3·xH2O): An eco-friendly catalyst for the synthesis of new Schiff-bases containing benzimidazole moiety

  • Varsha U. Vernekar,
  • Kallappa M. Hosamani,
  • Irfan N. Shaikh,
  • Kavitha C.S. Achar

DOI
https://doi.org/10.1016/j.arabjc.2011.07.030
Journal volume & issue
Vol. 9, no. S1
pp. S663 – S667

Abstract

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In this study H3PO4·12WO3·xH2O is found to catalyze the preparation of Schiff bases from the reaction of 3-(1H-Benzimidazol-2-yl)naphthalene-2-amine with different aldehydes efficiently in ethanol. The advantages of this environmental friendly and mild method are such as simplicity of the reaction procedure, the elimination of solvents, simple work-up, high product yields and short reaction times. The products were characterized by FT-IR 1H NMR, 13C NMR, mass spectrometry and elemental analysis.

Keywords