Abstract
A method for the preparation of N-R amides of benzimidazole-2-carboxylic acid on the basis of the reaction between o-phenylenediamine and esters of N-R oxamic acids was developed.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, pp. 684–686, May, 1982.
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Petyunin, P.A., Choudry, A.M. Synthesis of benzimidazole-2-carboxylic acid amides from o-phenylenediamine and oxamic acid esters. Chem Heterocycl Compd 18, 519–521 (1982). https://doi.org/10.1007/BF00526091
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DOI: https://doi.org/10.1007/BF00526091