## Abstract The dipeptide alanylproline has been prepared with the proline residue both ^13^C (15%) and ^15^N (95%) enriched. ^15^N NMR spectra of alanylproline reveal signals for both possible conformations—__cis__ and __trans__—of the dipeptide backbone in solution. Different p__K__ values for bo
Stereospecificity of the15N−13C coupling constants and the chemical shifts in the13C NMR spectra of azobenzenes and nitrosobenzenes
✍ Scribed by V. V. Negrebetskii; A. I. Bokanov; B. I. Stepanov
- Publisher
- SP MAIK Nauka/Interperiodica
- Year
- 1982
- Tongue
- English
- Weight
- 255 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0022-4766
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract Measurement of the ^13^C NMR spectra of the bridgehead nitro compounds __1a–5a__ has been performed. It is found that one‐bond ^13^C^15^N coupling is not necessarily a reflection of the degree of s character of the bridgehead carbon exocyclic bonding orbital. Although the magnitude of
## Abstract Geminal ^15^N^13^C coupling constants have been measured in a series of ^15^N‐enriched 1‒phenyl‒3,5‒dialkyl‐substituted pyrazoles. The importance of the orientation of the nitrogen lone‐pair in determining the magnitude of ^2^__J__(^15^N^13^C) values is reflected in the enhanced coupli