The recent report by Vogtie (2) on the synthesis and a temperaturedependent n .m .r . study of [8J(2 .7)dithiametacyclophane prompts us to report our results on the analogous, smaller-ring compound, c7J(2 .6)dithiametacyclophane (I) . Originally, I was obtained, quite unexpectedly, in 18% yield m-x
Conformational effects observed in an NMR study of some thiacyclophanes
β Scribed by R. H. Mitchell; V. Boekelheide
- Book ID
- 112122056
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 1969
- Tongue
- English
- Weight
- 418 KB
- Volume
- 6
- Category
- Article
- ISSN
- 0022-152X
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
NMR spectral data are given for the A-ring in ten 4-en-3-one steroids, and the strategy of the spectral analysis is described. The data are interpreted in terms of an equilibrium between normal and inverted half-chair conformations, with the normal conformation predominant in all cases except when Z
JH and 13C NMR relaxation measurements at various magnetic fields have been used to characterize the nature of overall and internal motions in heparin epoxide in aqueous solution. A two-dimensional homonuclear NOESY experiment showed a considerable number of cross-relaxing protons in the molecule. T