Abstract
A number of 2-hydroxy-3-formylbenzo[b]thiophene azomethines and their derivatives, which model the individual tautomeric forms, were synthesized. As a result of a study of the electronic, vibrational, and PMR spectra, a ketone-amine structure, the stability of which is confirmed by quantum-mechanical calculations of the atomization energies of the individual tautomeric forms calculated by the Pariser-Parr-Pople (PPP) method within the Dewar σ, π parametrization, was assigned to these azomethines.
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Communication XVIII from the series “Benzoid—Quinoid Tautomerism of Azomethines and Their Structural Analogs.” See [1] for communication XVII.
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, pp. 635–642, May, 1975.
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Bren', V.A., Usacheva, V.I., Minkin, V.I. et al. Synthesis and structure of 2-hydroxy-3-formylbenzo[b]thiophene azomethines. Chem Heterocycl Compd 11, 555–560 (1975). https://doi.org/10.1007/BF00480477
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DOI: https://doi.org/10.1007/BF00480477