Proton magnetic resonance spectrum of 4-pyrone, chromone and xanthone
β Scribed by Caroline T. Mathis; J.H. Goldstein
- Publisher
- Elsevier Science
- Year
- 1966
- Weight
- 38 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0371-1951
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π SIMILAR VOLUMES
## Abstract The proton magnetic resonance spectrum of 4β__t__βbutylβ5,6βdihydroβ4Hβpyran has been analyzed with the aid of the paramagnetic shift reagent Eu(fod)~3~. All hydrogenβhydrogen spinβspin coupling constants are reported and a conformation is suggested which is consistent with these data.
Abstrnct-The PMR spectrum of thiophen dissolved in a nematic phase is reported. This spectrum has been analysed iteratively. The ratios of the various inter-proton distances determined in this study are in good agreement with those previously reported.