## Abstract ^13^C NMR spectra of friedelan, friedelan‐21‐one, friedelan‐6‐one, friedelane‐321‐dione, friedelane‐3,6‐dione and friedelane‐3,6,21‐trione have been recorded and signals assigned using off‐resonance decoupling, inversion recovery and lanthanide induced shift techniques.
Nuclear magnetic resonance spectra and structure of some alkyl vinyl sulphides
✍ Scribed by G. Ceccarelli; E. Chiellini
- Publisher
- John Wiley and Sons
- Year
- 1970
- Tongue
- English
- Weight
- 466 KB
- Volume
- 2
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
Abstract
The NMR spectra of eight alkyl vinyl sulphides have been analyzed and the parameters compared with those obtained from an analogous series of oxygen derivatives. It is shown that a definite parallelism exists between chemical shifts and HH coupling. Difference in absolute values have been explained by mesomeric interaction magnified image involving the ability of sulphur to accommodate a decet of electrons in its valence shell. By analogy with alkyl vinyl ethers, it is possible to predict a similar correlation between the spectral characteristics and relative reactivity of vinyl sulphides in cationic polymerization.
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