University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 7 2 1996 06 01 SYNTHESIS OF 1, l1-DIHYDROXY-2,2'- (THIODIMETHYLENE) BIS-9(1 OH)-ANTHRONE - 31097 EN Journal Article An efficient synthesis of the 1,l'-dihydroxy-2,2'-(thiodimethy1ene)bis-9(10H)- anthrone (5) is described. Reaction of 1 -methoxy-2-(bromomethy1)-9,lOanthraquinone (1) with excess sodium sulfide in ethanol, demethylation to the corresponding hydroxy and subsequent selective reduction produced the title compound in high yield. https://jsciences.ut.ac.ir/article_31097_507a08d46df3369ee992dae0ad39b856.pdf