Complete assignment of the 13C NMR spectra of 4,4-dimethylanthracene-1,9,10(4H)-trione and the regioisomeric monomethyl derivatives

Abstract

The 1H and 13C NMR spectra of a set of structurally related tricyclic quinones consisting of 4,4-dimethylanthracene-1,9,10(4H)-trione (1), 4,4,6,7-tetramethylanthracene-1,9,10(4H)-trione (2) and the regioisomers 4,4,5-(3), 4,4,6-(4), 4,4,7-(5) and 4,4,8-trimethylanthracene-1,9,10(4H)-trione (6) were assigned completely using two-dimensional techniques. Copyright © 2000 John Wiley & Sons, Ltd.