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Imine-enamine tautomerism in dihydroazolopyrimidines. 2. Synthesis and tautomerism of 1,4(3,4)-dihydropyrimido[1,2-a]benzimidazoles

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Chemistry of Heterocyclic Compounds Aims and scope

Abstract

Cyclocondensation of 2-aminobenzimidazole with unsaturated ketones or the hydrochlorides of Mannich bases has yielded aromatic substituted 1,4(3,4)-dihydropyrimido[1,2-a]benzimidazoles. The dependence of the tautomer composition of the products on steric factors and on the electronic character of the substituents introduced has been studied.

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Literature Cited

  1. S. M. Desenko, V. D. Orlov, and V. I. Beskorovainyi, Khim. Geterotsikl. Soedin., No. 2, 245 (1990).

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Authors and Affiliations

  1. A. M. Gorkii State University, 310077, Kharkov

    S. M. Desenko, V. D. Orlov, V. V. Lipson & Kh. Éstrada

Authors
  1. S. M. Desenko
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  2. V. D. Orlov
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  3. V. V. Lipson
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  4. Kh. Éstrada
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Additional information

For Communication 1, see [1].

Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 9, pp. 1215–1219, September, 1991.

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Desenko, S.M., Orlov, V.D., Lipson, V.V. et al. Imine-enamine tautomerism in dihydroazolopyrimidines. 2. Synthesis and tautomerism of 1,4(3,4)-dihydropyrimido[1,2-a]benzimidazoles. Chem Heterocycl Compd 27, 976–980 (1991). https://doi.org/10.1007/BF00484361

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  • DOI: https://doi.org/10.1007/BF00484361

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