| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5224233 | Tetrahedron | 2008 | 6 Pages |
Abstract
Six β-diketones related to curcumin and curcumin itself have been studied by 13C NMR spectroscopy in chloroform in order to determine the equilibrium constant between the two keto/enol tautomers. In order to do this GIAO/B3LYP/6-31Gââ calculations of absolute shieldings (Ï, ppm) were carried out. To establish relationships between Ï and experimental chemical shifts (δ, ppm), three simple β-diketones (acetylacetone, dibenzoylmethane and benzoylacetone) have been studied. The preference for different groups to be conjugated with the CO has been determined.
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Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Pilar Cornago, Rosa M. Claramunt, Latifa Bouissane, Ibon Alkorta, José Elguero,