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Features of the Tautomerism of Some α-Substituted Pyridines (2000)

Kereselidze, J. A. ; Zarkua, T. Sh.

Springer

Chemistry of heterocyclic compounds 36 (2000), S. 1161-1163

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ISSN: 1573-8353

Keywords: keto-enol and amino-imino tautomerism ; pyrid-2-one ; 2-amino- and 2-methylpyridine ; quantum-chemical calculations ; tautomeric equilibrium constants

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology

Notes: Abstract The AM1 quantum-chemical semi-empirical method was used to calculate the values of the enthalpy of activation (ΔΔH#), the heats of reaction (ΔΔH), and the tautomeric equilibrium constants (KT) for several α-substituted pyridines. It was found that the keto-enol tautomeric conversion in α-pyridone occurs more readily than the amino-imino conversion in 2-aminopyridine but in 2-methylpyridine the tautomeric equilibrium does not exist at all.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1023/A:1002860430962

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