Nuclear magnetic resonance study of keto-enol tautomerism in polymeric β-dicarbonyl compounds

Conclusions 1.Carbon-chain polymers with ß-diketone and ß-keto ester functional groups in the side chains have been synthesized.2.The tautomeric equilibrium of the polymeric ß-dicarbonyl compounds polymethacryloylacetone and poly(vinyl acetoacetate) and low-molecular models of these polymers has been studied. The effect of the macromolecular nature of the polymeric ß-diketones on the tautomeric equilibrium is expressed as a significant difference between their thermodynamic equilibrium parameters and those of the low-molecular analog.