17O chemical shifts were measured in 40 enamines activated in the b-position by CxO, COO, NO 2 , SO and groups. Data for the oxygen-containing series of o-hydroxyacyl aromatics are also included for com-SO 2 parison. Intramolecular hydrogen bonding in the enamines is discussed in terms of the accept
Effects of molecular asymmetry on 13C chemical shifts in some O- and N-glycidyl compounds
✍ Scribed by B. Everatt; A. H. Haines; B. P. Stark
- Publisher
- John Wiley and Sons
- Year
- 1976
- Tongue
- English
- Weight
- 267 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
Abstract
In the ^13^C{^1^H} n.m.r. spectra of certain organic compounds containing two or three glycidyl (2,3‐epoxyprop‐1‐yl) groups, chemical shift nonequivalence has been observed, between diastereoisomers, for chemically similar carbon atoms in the glycidyl groups. Nonequivalence was only apparent when the glycidyl groups were linked through a single atom. In three derivatives of diglycidylaminobenzene, ^13^C chemical shift nonequivalence was also observed for aromatic carbon atoms ortho to the nitrogen substituent.
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