Abstract
The ring-chain tautomeric equilibrium constants (K) of aryl-ring-substituted 3-arylamino-3-phenylphthalides in dioxane were measured by UV spectroscopy. A satisfactory linear correlation between log K/K0 and the σ+ constants of the substituents in the aryl ring was found.
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See [1] for communication III.
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, pp. 1476–1478, November, 1975.
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Valter, R.É., Tsiekure, V.P. Ring - chain transformations with participation of the C = N group. Chem Heterocycl Compd 11, 1258–1260 (1975). https://doi.org/10.1007/BF00474448
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DOI: https://doi.org/10.1007/BF00474448