Abstract
The kinetic regularities of cyclization of 2′- and 4′-substituted diphenylamine-2-carboxylic acids in sulfuric acid were determined. The rate of cyclization of diphenylamine-2-carboxylic acids is linearly dependent on the nature of substituents in the meta-position relative to the reaction site in accordance with the two-parameter Hammett equation.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 3, pp. 577—579, March, 2011.
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Pelevin, N.A., Markovich, Y.D., Nazarov, G.V. et al. The rate of cyclization of 2′- and 4′-substituted diphenylamine-2-carboxylic acids in sulfuric acid as a function of the electronic properties of substituents. Russ Chem Bull 60, 590–592 (2011). https://doi.org/10.1007/s11172-011-0092-0
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DOI: https://doi.org/10.1007/s11172-011-0092-0