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Nitrogen and carbon NMR of some benzofuroxans

✍ Scribed by M. Witanowski; L. Stefaniak; S. Biernat; G. A. Webb

Publisher
John Wiley and Sons
Year
1980
Tongue
English
Weight
295 KB
Volume
14
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

^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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