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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~FSbF~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.
✍ Y. Infarnet; J. C. Duplan; J. Huet 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 320 KB

## 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