17O NMR spectroscopy of 4-substituted py
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D. W. Boykin; A. L. Baumstark; P. Balakrishnan
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Article
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1985
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John Wiley and Sons
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English
⚖ 309 KB
## Abstract The ^17^O chemical shifts for 4‐substituted pyridine __N__‐oxides at natural abundance were measured in acetonitrile at 50°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