<b>Silica sulfuric acid promoted one-pot synthesis of benzo[4,5]imidazo[1,2-<i>a</i>]pyrimidine derivatives under solvent-free conditions</b>

Abstract

A simple and efficient synthesis of benzo[4,5]imidazo[1,2-α]pyrimidine derivatives has been accomplished by the reaction of 2-aminobenzimidazole, aldehydes and β-dicarbonyl compounds under solvent-free conditions in the presence of silica sulfuric acid.

Keywords

• Benzo[4
• 5]imidazo[1
• 2-<i>α </i>]pyrimidine
• Silica sulfuric acid
• 2-Aminobenzimidazole
• Aromatic aldehydes
• β -Dicarbonyl compounds
• Solvent-free