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Condensed imidazo-1,2,4-azines. 15. Reaction of 1,2-diaminobenzimidazole with 5-phenyl-2,3-dihydrofuran-2,3-dione

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Chemistry of Heterocyclic Compounds Aims and scope

Abstract

The reaction of 1,2-diaminobenzimidazole with 5-phenyl-2,3-dihydrofuran-2,3-dione in acetic acid gave a mixture of 2-benzoylmethyl-1,2,4-triazino [2,3-a]-benzimidazol-4H-3-one and 3-benzoylmethyl-1,2,4-triazino[2,3-a]benzimidazol-1H-2-one, the intramolecular cyclization of which gave isomeric 2-phenylfuro-[5,4-e]- and 2-phenylfuro[4,5-e]-1,2,4-triazino[2,3-a]benzimidazoles. Only the corresponding furo[4,5-e]-1,2,4-triazino[2,3-a]benzimidazole was isolated when the reaction was carried out in sulfuric acid.

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Authors and Affiliations

  1. Kherson Industrial Institute, 325008, Kherson

    V. P. Kruglenko, V. P. Gnidets, N. A. Klyuev & M. V. Povstyanoi

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  1. V. P. Kruglenko
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  2. V. P. Gnidets
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  3. N. A. Klyuev
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  4. M. V. Povstyanoi
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Additional information

See [1] for Communication 14.

Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 4, pp. 533–535, April, 1987.

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Kruglenko, V.P., Gnidets, V.P., Klyuev, N.A. et al. Condensed imidazo-1,2,4-azines. 15. Reaction of 1,2-diaminobenzimidazole with 5-phenyl-2,3-dihydrofuran-2,3-dione. Chem Heterocycl Compd 23, 444–446 (1987). https://doi.org/10.1007/BF00546744

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  • DOI: https://doi.org/10.1007/BF00546744

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