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The carbon‐13 nuclear magnetic resonance spectra of anthraquinone, eight polyhydroxyanthraquinones and eight polymethoxyanthraquinones
Author(s) -
Berger Y.,
Castonguay A.
Publication year - 1978
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.1270110802
Subject(s) - intramolecular force , chemical shift , substituent , anthraquinone , chemistry , spectral line , decoupling (probability) , carbon fibers , photochemistry , nuclear magnetic resonance , computational chemistry , stereochemistry , organic chemistry , materials science , physics , astronomy , control engineering , composite number , engineering , composite material
The 13 C NMR spectra of anthraquinone, eight hydroxyanthraquinones and eight methoxyanthraquinones are reported. Peak assignment for the carbon atoms of these compounds is achieved by using decoupling techniques and by intercomparison of the variously‐substituted derivatives. Carbonyl chemical shifts in the hydroxyanthraquinones can be rationalized in terms of cross conjugation and intramolecular hydrogen bonding and in terms of cross conjugation in the methoxyanthraquinones. Hydroxy and methoxy substituent chemical shifts are also reported.