13C NMR spectra and three-dimensional structures of isomeric 3,4-substituted thiophans
β Scribed by T. M. Filippova; S. D. Mikhno; N. S. Kulachkina; I. G. Suchkova; V. M. Berezovskii
- Book ID
- 112349501
- Publisher
- Springer US
- Year
- 1981
- Tongue
- English
- Weight
- 437 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0009-3122
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract The ^13^C NMR spectra of four pairs of 1,3,4βthiadiazole/thiadiazoline isomers have been recorded using broad band and offβresonance proton decoupling techniques and in the coupled mode. Differences in the chemical shifts of the heterocyclic ring and the carbonyl carbons allow identific
A series of 14 3-substituted 4-oxoquinolones with or without a substituent (methyl, ethyl) in position 1 were prepared. Literature and measured data were used to study the inΓuence of the substituent on the shifts of carbon atoms of these compounds, which are model compounds for antibacterial drugs