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13C- and 1H-NMR. Spectra of ortho-benzoquinones. On the assignment problem in 13C spectra

✍ Scribed by R. Hollenstein; Wolfgang Von Philipsborn

Publisher
John Wiley and Sons
Year
1973
Tongue
German
Weight
167 KB
Volume
56
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

^13^C‐ and ^1^H‐NMR. spectra of ortho‐benzoquinone 1 and its methyl derivatives have been analysed. By means of heteronuclear double resonance experiments it is shown that assignments given in the literature for the olefinic carbon resonances of 1 and of a series of substituted ortho‐benzoquinones have to be inverted. ^13^C‐carbonyl frequencies of various six‐membered cyclic ketones are presented.

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