Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
Substituent Effects on Tautomerism of 4-Pyridinethiones
Hiromichi BessoKimiaki ImafukuHisashi Matsumura
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1977 Volume 50 Issue 12 Pages 3295-3297

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Abstract

The tautomeric constants Kt of several 4-pyridinethiones were determined by measurement of pKa values. For 2-substituted 5-methoxy-4-pyridinethiones, the Kt values are correlated to the substituent constants σ, by the equation logKt=4.00+3.99σm−7.33σ0.

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