We report the synthesis of benzimidazole derivatives using zinc triflate as an efficient catalyst. One-pot synthesis of 2-substituted benzimidazole derivatives from o-phynelyenediamine and substituted aldehydes were developed under zinc triflate in ethanol solvent at reflux temperature.

). -Compounds (IIId-f) and (VIf) exhibit moderate to good antibacterial activities against S. aureus and E. coli. -(NAGARAJU, V.; SRINIVASULU, R.; DORASWAMY, K.; RAMANA*, P. V.; J.

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