Collect. Czech. Chem. Commun. 1987, 52, 2850-2858

Tautomerization of acetylacetone and relation of the tautomerization constant to other equilibrium parameters

Jiří Mollina, Jitka Dopitováb and Oldřiška Staňkováa

a Department of Chemistry, Palacký University, 771 46 Olomouc
b Research Department, Přerov Chemical Works, 750 62 Přerov


The relative partial pressures of acetylacetone above mixed aqueous-organic solutions were measured chromatographically and the Gibbs energies of acetylacetone transfer from water to the mixed solvents were determined and separated into contributions from the keto and enol forms. The tautomerization equilibrium was related to other thermodynamic equilibria and the Gibbs energy of transfer of the keto form was correlated with that of acetone.