Related Products of 14248-66-9. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 3,5-Dimethyl-4-nitropyridine 1-oxide, is researched, Molecular C7H8N2O3, CAS is 14248-66-9, about The influence of steric effect on 1H NMR, 13C NMR, and IR spectra of methylated derivatives of 4-nitropyridine N-oxide.
The 1H NMR, 13C NMR, and IR spectra of 2-methyl-. 2,3-dimethyl-, 2,5-dimethyl-, 2,6-dimethyl-, 3,5-dimethyl-, and 2,3,6-trimethyl-4-nitropyridine N-oxides were interpreted. The influence of electron properties of substituents on changes of chem. shifts was analyzed. It was found that “”ortho-effect”” of the Me group inhibits paramagnetism of the nitro group. The ratio between a given substituted heterocyclic compound, its parent compound and the identically substituted benzene derivatives has been determined It was found that the effect of the nitro group on chem. shift and the so-called back donation is modified by electronegativity and the position of the substituent.
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Reference:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem