Deuterium isotope effects on I3C nuclear shielding, "AC(OD), were investigated for a series of enolic /3-diketones at different temperatures. The investigated enolic B-diketones cover a broad range of tautomeric equilibrium constants (K). The equilibrium constants were estimated from ''0 and I3C che
Deuterium isotope effects as a conformational probe in cyclic and acyclic ketones
โ Scribed by Stefan Berger; Bernd W. K. Diehl
- Publisher
- John Wiley and Sons
- Year
- 1988
- Tongue
- English
- Weight
- 516 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0749-1581
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โฆ Synopsis
Cyclic ketones from cyclobutanone to cyclohexadecanone were labelled with deuterium in the a-position. The deuterium isotope effect on the ''C NMR spectra was measured and in some cases was indicative of perturbation of conformational equilibrium. Similar effects were observed with acyclic ketones. The results were confirmed by temperature-dependent measurements and molecular mechanics calculations.
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