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NMR spectra of cyclic nitrones. 6. Tautomeric equilibrium ofΒ-oxo-nitrones — 3-Imidazoline 3-oxide derivatives

✍ Scribed by V. A. Reznikov; L. B. Volodarskii


Publisher
Springer US
Year
1991
Tongue
English
Weight
349 KB
Volume
27
Category
Article
ISSN
0009-3122

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The "0 NMR signals of trimethylamine oxide and of six (para-substituted) N-aryldimethylamine oxides appear at 240-260 ppm, cu. 200 ppm more deshielded than hydroxylamines. The influence of the arene group and its substituents is small, confirming the absence of resonance interaction between the ring