Reaction of 3-nitro-1,2,4-triazole and 5-methyl-3-nitro-1,2,4-triazole with secondary and tertiary alcohols in conc. H2SO4 takes place at the N(2) atom. Alkylation by 2-propanol occurs regioselectively to form the 1-isopropyl-3-nitro-and 1-isopropyl-3-methyl-5-nitro-1,2,4-triazoles. As a consequence of isomerization the alkylation using cyclohexyl or tert-butyl alcohols gives respectively a mixture of regioisomers substituted at atom N(1) (1-cyclohexyl-3-nitro-and 1-cyclohexyl-5-methyl-3-nitro-1,2,4-triazoles) and at atom N(2) (5-nitro-1-cyclohexyl-and 1-cyclohexyl-3-methyl-5-nitro-1,2,4-triazoles) and, in the second case, to 1-tert-butyl-3-nitro-1,2,4-triazole.
Similar content being viewed by others
References
G. T. Sukhanov, A. G. Sukhanova, and Yu. V. Sheikov, Khim. Geterotsikl. Soedin., 927 (2007). [Chem. Heterocycl. Comp., 43, 786 (2007)].
L. I. Bagal and M. S. Pevzner, Khim. Geterotsikl. Soedin., 558 (1970). [Chem. Heterocycl. Comp., 6, 517 (1970)].
M. S. Pevzner, E. Ya. Fedorova, I. N. Shokhor, and L. I. Bagal, Khim. Geterotsikl. Soedin., 275 (1971). [Chem. Heterocycl. Comp., 7, 252 (1971)].
G. T. Sukhanov and A. Yu. Lukin, Khim. Geterotsikl. Soedin., 1020 (2005). [Chem. Heterocycl. Comp., 41, 861 (2005)].
G. T. Sukhanov, G. V. Sakovich, A. G. Sukhanova, and A. Yu. Lukin, Khim. Geterotsikl. Soedin., 1168 (2005). [Chem. Heterocycl. Comp., 41, 994 (2005)].
G. T. Sukhanov, A. G. Sukhanova, and Yu. V. Il'yasova, Khim. Geterotsikl. Soedin., 1378 (2006). [Chem. Heterocycl. Comp., 42, 1197 (2006)].
V. B. Kazanskii, Izv. Akad. Nauk SSSR, Ser. Khim., 2261 (1990).
P. N. Gaponik and S. V. Voitekhovich, Zh. Org. Khim., 34, 778 (1998).
A. O. Koren and P. N. Gaponik, Khim. Geterotsikl. Soedin., 1574 (1990). [Chem. Heterocycl. Comp., 26, 1315 (1990)].
A. O. Koren and P. N. Gaponik, Khim. Geterotsikl. Soedin., 1643 (1990). [Chem. Heterocycl. Comp., 26, 1366 (1990)].
R. W. Middleton, H. Monney, and J. Parrick, Synthesis, 740 (1984).
V. V. Mel'nikov, V. V. Stolpakova, M. S. Pevzner, and B. V. Gidaspov, Khim. Geterotsikl. Soedin., 707 (1973). [Chem. Heterocycl. Comp., 9, 651 (1973)].
L. I. Bagal, M. S. Pevzner, A. N. Frolov, and N. I. Sheludyakova, Khim. Geterotsikl. Soedin., 259 (1970). [Chem. Heterocycl. Comp., 6, 240 (1970)].
L. I. Bagal and M. S. Pevzner, Khim. Geterotsikl. Soedin., 272 (1971). [Chem. Heterocycl. Comp., 7, 249 (1971)].
Author information
Authors and Affiliations
Corresponding author
Additional information
* For Communication 5 see [1].
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, pp. 1680–1687, November, 2008.
Rights and permissions
About this article
Cite this article
Sukhanova, A.G., Sakovich, G.V. & Sukhanov, G.T. Reactions of 3-nitro-1,2,4-triazoles with alkylating agents. 6*. Alkylation of a neutral heterocycle by alcohols in acid media*. Chem Heterocycl Comp 44, 1368–1373 (2008). https://doi.org/10.1007/s10593-009-0194-x
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10593-009-0194-x