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Organic structure characterization by natural-abundance nitrogen-15 nuclear magnetic resonance spectroscopy. Penicillin and cephalosporin derivatives

✍ Scribed by Lichter, Robert L.; Dorman, Douglas E.


Book ID
120019030
Publisher
American Chemical Society
Year
1976
Tongue
English
Weight
242 KB
Volume
41
Category
Article
ISSN
0022-3263

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Nitrogen-15 nuclear magnetic resonance s
✍ Hiroshi Nakanishi; John D. Roberts πŸ“‚ Article πŸ“… 1981 πŸ› John Wiley and Sons 🌐 English βš– 577 KB

## Abstract The ^15^NMR chemical shifts were measured of a number of __N__‐substituted formamides and acetamides at the natural abundance level. The ratios of the __cis__ and __trans__ isomers for several __N__‐alkylformamides were also determined. Substituent effects on the ^15^N chemical shifts o