The 220 MHz 'H spectra of isoverbanone, nopinone and verbanone are reported. The spectra of the first two are completely assigned but that of verbanone only partially. The coupling constants obtained provide information about the conformation of these molecules. The isoverbanone molecule is almost Y
The NMR spectra and conformations of cyclic compounds—IV: The conformation of 3,4-cyclopropyl-proline
✍ Scribed by R. J. Abraham; G. Gatti
- Publisher
- John Wiley and Sons
- Year
- 1970
- Tongue
- English
- Weight
- 286 KB
- Volume
- 2
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
The ^1^H magnetic resonance spectrum of the title compound has been completely analysed, using 60, 100 and 220 MHz spectrometers. The values of the chemical shifts and coupling constants obtained confirm the proposed structure and also provide information on the conformation. The molecule is slightly boat‐shaped.
📜 SIMILAR VOLUMES
## Abstract The 220 MHz PMR spectrum of car‐3‐ene (3,7,7‐trimethylbicyclo[4,1,0]hept‐3‐ene) is interpreted and a conformation deduced. In contrast to previous work, which has discussed a highly buckled structure for the 6 membered ring, the present work finds this ring to be essentially planar.
## Abstract The proton magnetic resonance spectra of β‐pinene pinocarvone and the __cis__‐ and __trans__‐pinocarveols have been completely assigned at 220 and 300 MHz. On the basis of the proton‐proton spin‐spin couplings derived, conformations have been deduced for these molecules with greater cer
## Abstract We describe the reassignment of ^13^C NMR signals of goyazensolide based upon 1D and 2D techniques, and discuss its conformation and stereochemistry as obtained from the analysis of its proton spin–spin coupling constants, NOE measurements and molecular mechanics calculations using MM3\
## Abstract The study of vibrational spectra of __cis__‐3,4‐dimethylcyclopentanone shows that this molecule belongs to the __C__~1~ symmetry group, with a half‐chair conformation.