Abstract
The pKa values of a number of 7-oxo-4,7-dihydropyrazolo- and 1,2,4-triazolo[5,1-c]-[1,2,4]triazines, which range from 0.33 to 6.50 and correlate with the σ meta constants of substituents in the 6 position, were determined by spectrophotometric and potentiometric methods.
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B. Stanovnik and M. Tišler, Khim. Geterotsikl. Soedin., No. 5, 579 (1980).
V. L. Rusinov, A. Yu. Petrov, and I. Ya. Postovskii, Khim. Geterotsikl. Soedin., No. 9, 1283 (1980).
G. Tennant and M. F. Stevens, J. Chem. Soc., Perkin Trans. I, No. 12, 421 (1976).
E. J. Gray, M. F. G. Stevens, G. Tennant, and R. J. S. Vevers, J. Chem. Soc., Perkin Trans. I, No. 14, 1496 (1976).
M. H. Elnaqdi, E. M. Zayed, and S. Abdon, Heterocycles, 19, 559 (1982).
J. Daunis, R. Jacquier, and P. Vialletout, Bull. Soc. Chim. Fr., No. 12, 2492 (1969).
A. Yu. Petrov, V. L. Rusinov, and O. N. Chupakhin, Khim. Geterotsikl. Soedin., No. 9, 1277 (1982).
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, pp. 697–699, May, 1984.
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Egorova, L.G., Petrov, A.Y. & Rusinov, V.L. NH acidities of 7-oxo-4,7-dihydropyrazolo- and 1,2,4-triazolo[5,1-c][1,2,4]triazines. Chem Heterocycl Compd 20, 564–566 (1984). https://doi.org/10.1007/BF00514313
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DOI: https://doi.org/10.1007/BF00514313