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Research on imidazo[1,2-a]benzimidazole derivatives XII. 3-Acyl-substituted imidazo[1,2-a]benzimidazoles

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Abstract

Stable 3-acetyl derivatives of imidazo[1,2-a]benzimidazole were synthesized by the action of acetic anhydride on 2,9-disubstituted imidazo[1,2-a]benzimidazole. The former were also obtained by cyclization of 1-alkyl (aralkyl) -3-acylmethyl-2-iminobenzimidazoline hydrobromides in acetic anhydride in the presence of anhydrous sodium acetate. 3-Benzoyl-substituted imidazo[1,2-a]benzimidazoles, which are unstable in acidic media, were synthesized by the action of benzoyl chloride in the presence of pyridine or excess starting imidazo [1,2-a] benzimidazole.

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See [1] for communication XI.

Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 1, pp. 121– 125, January, 1976.

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Anisimova, V.A., Simonov, A.M. Research on imidazo[1,2-a]benzimidazole derivatives XII. 3-Acyl-substituted imidazo[1,2-a]benzimidazoles. Chem Heterocycl Compd 12, 110–114 (1976). https://doi.org/10.1007/BF00473925

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  • DOI: https://doi.org/10.1007/BF00473925

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