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Carbon-13 NMR studies of benzoquinones

✍ Scribed by P. Joseph-Nathan; D. Abramo-Bruno; D. A. Ortega

Publisher
John Wiley and Sons
Year
1981
Tongue
English
Weight
597 KB
Volume
15
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The assignment of all ring carbons of p‐benzoquinones derived from perezone and from thymoquinone was completed using gated decoupled spectra. The long range proton‐carbon couplings are discussed in terms of the degree of substitution of the quinone ring. The tautomeric interconversion of the two energetically equivalent forms of 2,5‐dihydroxy‐1,4‐benzoquinones has been studied in various solvents and at several temperatures.

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