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H. A. Barker, R. D. Smyth, H. Weissbach, J. I. Toohey, J. N. Ladd and B. E. Volcani, “Isolation and Properties of Crystalline Cobamide Coenzymes Containing Benzimidazole or 5,6-Dimethylbenzimidazole,” Journal of Biological Chemistry, Vol. 235, No. 2, 1960, pp. 480-488.

has been cited by the following article:

• TITLE: Facile and Efficient Method for Synthesis of Benzimidazole Derivatives Catalyzed by Zinc Triflate

  AUTHORS: Ramineni Srinivasulu, Kannasani Ravi Kumar, Peruri Veera Venkata Satyanarayana

  KEYWORDS: Benzimidazole Derivatives; O-Phynelyenediamine; Substituted Aldehydes; Zinc Triflate

  JOURNAL NAME: Green and Sustainable Chemistry, Vol.4 No.1, February 25, 2014

  ABSTRACT: 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.