A. P. Hyengoyan, K. A. Eliazyan, V. A. Pivazyan
Aug 1, 2005
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Journal
Chemistry of Heterocyclic Compounds
Abstract
We have used 1H NMR to study the amine-imine tautomerism of some esters and amides of 2-N-labeled 4-methylthiazole-5-carboxylic acids and 5-carbamic acids. We have shown that the nature of the substituents of the 2-NHR1, 5-COR2, or 5-NHCOR2 groups affects that position of the tautomeric equilibrium.