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Synthesis of 2-substituted benzimidazoles and bis-benzimidazoles by microwave in the presence of alumina-methanesulfonic acid

Abstract

A microwave-assisted method for the synthesis of 2-substituted benzimidazoles in the presence of alumina-methanesulfonic acid (AMA) is reported. In addition, by this method some new bis-benzimidazoles from the direct reaction of phenylenediamine and dicarboxylic acid under microwave irradiation in good to excellent yields are described.

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Correspondence to K. Niknam.

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Niknam, K., Fatehi-Raviz, A. Synthesis of 2-substituted benzimidazoles and bis-benzimidazoles by microwave in the presence of alumina-methanesulfonic acid. JICS 4, 438–443 (2007). https://doi.org/10.1007/BF03247230

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Keywords

  • Benzimidazoles
  • Bis-benzimidazoles
  • 1,2-Phenylenediamine
  • Carboxylic acids
  • Alumina-methanesulfonic acid
  • Microwave irradiation