Synthesis of 2-Substitued Benzimidazoles Using P2O5-SiO2

Authors

• Ahmad Reza Momeni ¹
• Somayeh Bagheri ²

1. Department of Chemistry, Faculty of Science, Shahrekord University, Shahrekord, Iran.
2. Faculty of Science, Shahreza Branch Islamic Azad University, 86145-311, Iran

Abstract

P₂O₅-SiO₂ (30% w/w) was found to be a useful catalyst for the synthesis of various 2-substituted aryl benzimidazoles under solvent-less and in solvent conditions from o-phenylenediamine and aldehydes. The products were directly recrystallized from methanol.

Keywords

• Solvent-free
• Benzimidazole
• P2O5.SiO2
• o-Phenylenediamine
• Supported catalyst.