13C NMR Spectra and Isomerism of β-Alkoxy Enones

Tencer, Michal; Dabrowski, Janusz

doi:10.1080/00387018308062352

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13C NMR Spectra and Isomerism of β-Alkoxy Enones

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Dabrowski, Janusz
Department of Organic Chemistry, Max Planck Institute for Medical Research, Max Planck Society;

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Citation

Tencer, M., & Dabrowski, J. (1983). 13C NMR Spectra and Isomerism of β-Alkoxy Enones. Spectroscopy Letters, 16(5), 351-361. doi:10.1080/00387018308062352.

Cite as: https://hdl.handle.net/21.11116/0000-0003-4CC2-D

Abstract

13C NMR chemical shifts for α, β and carbonyl carbon atoms in a series of β-alkoxy and β-hydroxy α, β-unsaturated ketones have been measured and correlated with electron densities calculated by the INDO method. The influence of the cis/trans, s-cis/s-trans and O-s-cis/O-s-trans isomerism on those chemical shifts has been estimated. The effect of the chelating hydrogenbond formation on the spectra has also been discussed.