Abstract
The existence of amine-imine tautomerism in 2-phenylaminothiazolin-4-ones was confirmed by comparison of the IR and UV spectra of these compounds with N-methyl model compounds with amine and imine structures. It is shown that the temperature changes in the PMR spectra are associated with syn-anti isomerization relative to the exocyclic CN bond. The kinetic parameters of this isomerization were calculated, and it was established that it is realized in the imine form via an inversion mechanism.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 190–195, February, 1978.
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Engoyan, A.P., Peresleni, E.M., Vlasova, T.F. et al. Tautomerism and spatial isomerism in the 2-phenylaminothiazolin-4-one series. Chem Heterocycl Compd 14, 148–153 (1978). https://doi.org/10.1007/BF00945327
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DOI: https://doi.org/10.1007/BF00945327