## Abstract Carbonโ13 NMR spectra of a variety of monoโ and bicyclic ฮฒโlactams have been measured and the chemical shifts of the ring carbon atoms have been assigned unambiguously. Effects of substituents on the chemical shifts of these carbons are also discussed.
Carbon-13 nuclear magnetic resonance studies on dichloropyridoquinolines
โ Scribed by Frank F. Molock; David W. Boykin
- Publisher
- John Wiley and Sons
- Year
- 1982
- Tongue
- English
- Weight
- 431 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0749-1581
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โฆ Synopsis
Abstract
Carbonโ13 NMR chemical shifts are reported for six angular and one linear dichloropyridoquinolines in CDCl~3~. The chemical shift assignments have been made using model compounds, fully coupled spectra, selective proton decoupling and results from lanthanide shift studies. Chlorine substituent effects are compared to those reported for chloroquinolines. The effect of the heteroaromatic nitrogen atoms on ^13^C๏ฃฟ^1^H coupling constants in these polycyclic systems are compared to those reported for pyridine systems.
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