A fast procedure for the preparation of benzimidazole derivatives using polymer-supported with trifluoromethanesulfonic acid as novel and reusable catalyst

CHANGIZ KARAMI ^[1] ; KEIVAN GHODRATI ^[1] ; MINA IZADI ^[2] ; AZITA FARROKH ^[1] ; SEDIGHEH JAFARI ^[2] ; MARYAM MAHMOUDIYANI ^[2] ; NAHID HAGHNAZARI ^[1]
1. [1] Islamic Azad University
  
  Islamic Azad University
  
  Irán
2. [2] Razi University
  
  Razi University
  
  Irán
Localización: Journal of the Chilean Chemical Society (Boletín de la Sociedad Chilena de Química), ISSN-e 0717-6309, ISSN 0366-1644, Vol. 58, Nº. 3, 2013, págs. 1914-1917
Idioma: inglés
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Resumen
- A highly selective synthesis of benzimidazoles from the reaction of o-phenylenediamines and aromatic aldehydes in the presence of PVP- trifluoromethanesul-fonic acid is reported, and morphological investigation was reported by FT-IR. The remarkable advantages of this method are the simple experimental procedures, shorter reaction times, high yields of product, and non-toxic catalyst. However, the reactions were performed in solvent-free and the catalyst could be reused for several runs.