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Natural abundance 17O NMR spectroscopy of heterocyclic N-oxides and Di N-oxides. Structural effects

✍ Scribed by D. W. Boykin; P. Balakrishnan; A. L. Baumstark

Book ID
112127919
Publisher
Journal of Heterocyclic Chemistry
Year
1985
Tongue
English
Weight
254 KB
Volume
22
Category
Article
ISSN
0022-152X

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πŸ“œ SIMILAR VOLUMES

17O NMR spectroscopy of heterocycles. St
17O NMR spectroscopy of heterocycles. Steric effects for N-oxides
✍ D. W. Boykin; P. Balakrishnan; A. L. Baumstark πŸ“‚ Article πŸ“… 1985 πŸ› John Wiley and Sons 🌐 English βš– 333 KB

The 1 7 0 chemical shift data for a series of 2and 4-alkyl-and -aryl-substituted pyridine N-oxides, as well as those for quinoline N-oxide (13), benzocflquinoline N-oxide (14) and benzo[h]qninoline N-oxide (15) at natural abundance were measured in acetonitrile at 75Β°C. 2-Alkyl groups cause a deshie

17O NMR spectroscopy of 4-substituted py
17O NMR spectroscopy of 4-substituted pyridine N-oxides: Substituent and solvent effects
✍ D. W. Boykin; A. L. Baumstark; P. Balakrishnan πŸ“‚ Article πŸ“… 1985 πŸ› John Wiley and Sons 🌐 English βš– 309 KB

## Abstract The ^17^O chemical shifts for 4‐substituted pyridine __N__‐oxides at natural abundance were measured in acetonitrile at 50Β°C. Electron withdrawing groups caused deshielding and electron donating groups caused shielding of the ^17^O resonance. The data are correlated with ^17^O chemical