## Abstract The positions of conformational equilibria in a variety of 5,5‐disubstituted 1,3‐dioxans have been established by low‐temperature ^1^H and ^13^C NMR spectroscopy and by reference to the NMR spectra of anancomeric 2,5,5‐trisubstituted derivatives.
1H NMR spectra and stereochemistry of cis- and trans-5,6-dimethyl-2-oxo-1,4-dioxans
✍ Scribed by Pertti Äyräs
- Publisher
- John Wiley and Sons
- Year
- 1975
- Tongue
- English
- Weight
- 203 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
Abstract
The ^1^H NMR spectra of isomeric 5,6‐dimethyl‐2‐oxo‐1,4‐dioxans have been recorded and the pertinent chemical shifts and coupling constants determined. The parameters indicate that both isomers exist as an equilibrium mixture of interconverting half chair ring conformations.
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