## Abstract The ^1^H NMR spectra of the protonated and unprotonated forms of __cis__‐ and __trans‐N‐methylhexahydroisoindoline__, of 1,3,3,4,4‐pentamethylpyrrolidine and of 1,3,3‐trimethylpyrrolidine were analyzed. The coupling constants between the NH⊕ and the CH protons α to the nitrogen allowed
✦ LIBER ✦
Saturated 5-membered ring conformation. 1—1H NMR study of protonated methyltetrahydrofurans in superacid medium
✍ Scribed by Y. Infarnet; J. C. Duplan; J. Huet
- Publisher
- John Wiley and Sons
- Year
- 1981
- Tongue
- English
- Weight
- 220 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
Abstract
Several methyltetrahydrofurans have been studied in HSO~3~FSbF~5~SO~2~ solution. O‐Protonation was observed from ^1^H NMR measurements at low temperature, and the coupling constants between ^+^OH and the CH protons α to oxygen were measured from the CH signals. A conformational interpretation could be carried out from these results.
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Saturated 5-membered ring conformations.
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