STUDIES ON PROTON MAGNETIC RESONANCE SPECTRA OF TWELVE ANTHRAQUINONE COMPOUNDS

This paper reports the PMR spectra of twelve new synthetic anthraquinones. The data are presented in tables 1 and 2.The chemical structures of these new compounds were further confirmed by the assigments of their chemical shifts. According to the coupling constants and NOE experiments the predominating conformation and configuration of two of these compounds, i e, 3-methoxy-anthraquinone-2-acrolein and anthraquinone-2-acryl-N, N-diethylamide have been discussed.In addition, the substituent effects on the chemical shifts of proton have been studied in detail.