Abstract
6(5)H-Benzimidazo[2,1-b]quinazolin-12-one was obtained in high yield by condensation of benzimidazole-2-sulfonic acid with anthranilic acid. Methods for the introduction of substituents selectively into the 5 and 6 positions of this heterocycle were developed.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1673–1677, December, 1987.
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Popov, I.I., Boroshko, S.L., Tertov, B.A. et al. Condensed derivatives of benzazoles. 1. Synthesis of 6- and 5-substituted benzimidazo[2,1-b]quinazolin-12-ones. Chem Heterocycl Compd 23, 1348–1352 (1987). https://doi.org/10.1007/BF00472263
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DOI: https://doi.org/10.1007/BF00472263