Nitrogen and carbon NMR of some benzofuroxans | Zendy

Witanowski M. | Zendy; Stefaniak L. | Zendy; Biernat S. | Zendy; Webb G. A. | Zendy

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Nitrogen and carbon NMR of some benzofuroxans

Author(s) -

Witanowski M.,

Stefaniak L.,

Biernat S.,

Webb G. A.

Publication year - 1980

Publication title -

organic magnetic resonance

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.483

H-Index - 72

eISSN - 1097-458X

pISSN - 0030-4921

DOI - 10.1002/mrc.1270140506

Subject(s) - furoxan , tautomer , chemical shift , nitro , benzene , chemistry , valence (chemistry) , ring (chemistry) , additive function , nitrogen , molecule , carbon 13 nmr , aryl , stereochemistry , computational chemistry , medicinal chemistry , organic chemistry , nitric oxide , mathematics , alkyl , mathematical analysis

15 N and 14 N NMR spectra show that there is no valence tautomerism involving the nitro group in nitro derivatives of benzofuroxan systems and that the N ‐oxide function has a fixed position in the furoxan ring. Carbon chemical shifts of molecules with one, two or three furoxan rings attached to a benzene ring reveal additivity of effects which makes possible a complete and unambiguous assignment of the shifts.

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