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Carbon-13 nuclear magnetic resonance studies of anthraquinones. Part III—correlation of substituent effects for 2-substituted anthraquinones

✍ Scribed by Y. Berger; M. Berger-Deguée; A. Castonguay

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

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✦ Synopsis

The 13C chemical shifts of 2-substituted and 2,6-disubstituted anthraquinones have been determined and assigned. The C-l,2,3,4,13 and C-14 chemical shifts of 2-substituted anthraquinones are correlated with the chemical shifts of monosubstituted benzenes. A three-parameter correlation with Swain and Lupton's 9 and 3 parameters and Schaefer's Q parameter provides relationships for the prediction of all chemical shifts of 2-substituted anthraquinones from the substituent parameters. Q values for the SCH,, OCOCH,, GH, and C(CH,), groups are proposed. The two types of correlations are compared for predicting chemical shifts.

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