Aa. Tabatskaya et al., REAGENT INFLUENCE ON THE DIRECTION OF NUCLEOPHILIC-SUBSTITUTION IN 1,4-NITROCHLOROANTHRAQUINONE, Mendeleev communications, (4), 1993, pp. 163-164
In the reaction of 1,4-nitrochloroanthraquinone with phenoxy anions in
DMSO, the main products are those of chlorine substitution, whereas t
hiophenoxy anions predominantly replace the nitro group.