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Investigation of imidazo[1,2-a]benzimidazole derivatives

VI. Preparation of imidazo[1,2-a]benzimidazole derivatives from 1-alkyl- and 1-aralkyl-2-iminobenzimidazoline-3-acetic acids and their esters

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Abstract

Esters of 1-alkyl- and 1-aralkyl-2-iminobenzimidazoline-3-acetic acids are converted to esters of 2,9-dimethylimidazo[1,2,-a]benzimidazole-3-carboxylic acid on heating with acetic anhydride. The brief action of acetic anhydride on the free iminobenzimidazolineacetic acids gives 2-oxo-2,3-dihydroimidazo[1,2-a]benzimidazoles, which are converted to 2,9-substituted 3-acetylimidazo[1,2-a]benzimidazoles on prolonged heating with acetic anhydride.

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Literature cited

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Authors and Affiliations

  1. Rostov State University, Rostov-on-Don

    A. M. Simonov, V. A. Anisimova & T. A. Borisova

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  1. A. M. Simonov
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  2. V. A. Anisimova
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  3. T. A. Borisova
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Additional information

See [1] for communication V.

Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 1, pp. 111–114, January, 1973.

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Simonov, A.M., Anisimova, V.A. & Borisova, T.A. Investigation of imidazo[1,2-a]benzimidazole derivatives. Chem Heterocycl Compd 9, 99–102 (1973). https://doi.org/10.1007/BF00476162

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  • DOI: https://doi.org/10.1007/BF00476162

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