Abstract
Sodium hydrogen sulfite was used to promote condensation of o-phenylenediamine with aromatic aldehydes in dimethylformamide to obtain the corresponding 2-arylbenzimidazoles. The procedure is simple and convenient, and it implies inexpensive promoter and is characterized by short reaction time and easy purification of the final products.
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Published in Russian in Zhurnal Organicheskoi Khimii, 2008, Vol. 44, No. 6, pp. 872–874.
The text was submitted by the authors in English.
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Han, X., Ma, H. & Wang, Y. A simple and efficient synthesis of 2-aryl-substituted benzimidazoles. Russ J Org Chem 44, 863–865 (2008). https://doi.org/10.1134/S1070428008060146
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DOI: https://doi.org/10.1134/S1070428008060146