Scheme 1From: Synthesis and biological profile of substituted benzimidazolesSynthesis of benzimidazole derivatives (1–30). Reaction condition: Step i: 2-Aminobenzimidazole, substituted aldehyde, ethanol, glacial acetic acid, reflux for 4–5 h (RT), Step ii: Schiff’s base, different acylchlorides, dimethylformamide, triethylamine, stir for 24 h (RT)Back to article page