Alkylation of sodium 4-acetyl-1-phenyl-1,2,3-triazol-5-olate with α-bromoacetophenones was shown to occur at position 3 of the heterocycle, with the formation of 1,2,3-triazol-3-ium-5-olates. Intramolecular crotonic condensation of the latter led to the formation of 1,2,3-triazolo[1,5-а]pyridin-8-ium-3-olates.
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The results were obtained within the framework of the State Assignment for sscientific activity No. 4.560.2014-K from the the Ministry of Education and Science of the Russian Federation and with support from the Russian Foundation for Basic Research (grant 13-03-00137).
The authors are grateful to the Laboratory of Complex Investigations and Expert Evaluation of Organic Materials, Collective Use Center of the Ural Federal University, for acquiring NMR spectra of the obtained compounds.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, 2015, 51(2), 199–202
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Khazhieva, I.S., Demkin, P.M., Nein, J.I. et al. Synthesis of 1,2,3-Triazolo[1,5-а]Pyridin-8-Ium-3-Olates. Chem Heterocycl Comp 51, 199–202 (2015). https://doi.org/10.1007/s10593-015-1681-x
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DOI: https://doi.org/10.1007/s10593-015-1681-x