Polynuclear noncondensed systems in which the azole rings are bound by urethane or carbamide fragments have been synthesized by the reaction of azole carboxylic acid azides with heterocyclic alcohols.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 4, pp. 557–565, April, 2011.
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Vereshchagin, L.I., Golobokova, T.V., Pokatilov, F.A. et al. The curtius reaction in the synthesis of noncondensed polynuclear azoles. Chem Heterocycl Comp 47, 456–463 (2011). https://doi.org/10.1007/s10593-011-0781-5
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DOI: https://doi.org/10.1007/s10593-011-0781-5