Abstract
Efficient methods have been developed for obtaining precursors of stable carbenes, viz. 5-unsubstituted 3,4-diaryl-1,2,4-triazoles and 3,3′- or 4,4′-bridge linked bis-1,2,4-triazoles, by the recyclization of 5-unsubstituted 1,3,4-oxadiazoles or p-phenylenebis-1,3,4-oxadiazole with anilines or aromatic diamines in the presence of trifluoroacetic acid or with aniline hydrochlorides in pyridine.
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REFERENCES
A. P. Grekov, Organic Chemistry of Hydrazine [in Russian], Tekhnika, Kiev (1966), 236 pp.
A. P. Grekov, Polymers Based on Hydrazine [in Russian], Naukova Dumka, Kiev (1976), pp. 111, 132.
R. Meyer, Ger. Pat. 574944 (1933); Chem. Abstr., 27, 4541 (1933).
M. Ya. Levin and M. S. Skorobogatova, Khim. Geterotsikl. Soedin., 339 (1967).
O. P. Shvaika, N. I. Korotkikh, G. F. Tereshchenko, and N. A. Kovach, Khim. Geterotsikl. Soedin., 853 (1976).
F. S. Babichev, V. O. Kovtunenko, and S. Ya. Shapiro, Ukr. Khim. Zh., 41, 1052 (1975).
J. H. Teles, K. Breuer, D. Enders, and H. Gielen, Synth. Commun., 29, 1 (1999).
O. P. Shvaika and T. R. Mnatsakonova, Zh. Obshch. Khim., 34, 2061 (1963).
V. V. Mezheritskii, E. P. Olekhnovich, S. M. Luk'yanov, and G. N. Dorofeenko, Ortho Esters in Organic Synthesis [in Russian], Rostov State University (RGU), Rostov-on-Don (1973).
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 1026–1032, July, 2005.
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Korotkikh, N.I., Kiselev, A.V., Knishevitsky, A.V. et al. Recyclization of 1,3,4-Oxadiazoles and Bis-1,3,4-oxadiazoles into 1,2,4-Triazole Derivatives. Synthesis of 5-Unsubstituted 1,2,4-Triazoles. Chem Heterocycl Compd 41, 866–871 (2005). https://doi.org/10.1007/s10593-005-0240-2
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DOI: https://doi.org/10.1007/s10593-005-0240-2