✦ LIBER ✦
1H n.m.r. spectra and ensuing conformational evidence on carbon–carbon double bonded systems. (Electrically neutral organic Lewis acids—33)
✍ Scribed by E. Haslinger; P. Wolschann
- Publisher
- John Wiley and Sons
- Year
- 1977
- Tongue
- English
- Weight
- 599 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
The n.m.r. spectra of various derivatives of the cyclic acylal of malonic acid and of dimethylbarbituric acid are described. From the long range coupling constant, conformational evidence on the dihedral angle θ between the aromatic ring and the diketodioxane ring or the N,N‐dimethylbarbituric acid ring can be derived. The investigated substances show a dependence of θ on the aromatic substitution.