The reactions of 3-cyanotetrafluoropyridine and tetrachloro-3-trifluoromethylpyridine with sodium azide lead to the corresponding 2,4,6-triazido-5-cyano-3-fluoropyridine and 2,4,6-triazido-5-chloro-3-trifluoromethylpyridine. With the aid of comparative X-ray structural analysis of 2,4,6-triazido-5-cyano-3-fluoropyridine and its previously known 3-chloro-substituted derivative it was established that the geometric parameters and reactivity of the azide groups in the asymmetric 2,4,6-triazi-dopyridines depend not only on the position of these groups in the pyridine ring but also on their mutual orientation in space.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 998–1008, July, 2011.
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Chapyshev, S.V., Korchagin, D.V., Shilov, G.V. et al. Synthesis and structure of asymmetric 2,4,6-triazidopyridines. Chem Heterocycl Comp 47, 817–825 (2011). https://doi.org/10.1007/s10593-011-0841-x
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DOI: https://doi.org/10.1007/s10593-011-0841-x