Quarterly Journal of the Chemical Society of London

2-aminoanthraquinone 2'-dianthraquinonylamine absorption acetic acid acetic anhydride acetone acidification added addition alcohol aldehyde alkaline alumina Amer amine anhydride anthraquinone aqueous sodium atom autoxidation benzene blue boiling bond bromide brown Calc Chem cinnoline colour colourless needles compound concentrated sulphuric acid condensation cooled copper cordycepin crystallised D.Sc decomp decomposition derivative dilute dimethyl dioxan distilled dithionite dried ester evaporated filtered filtrate formation formed Found fraction gave give heated under reflux hydrochloric acid hydrogen chloride hydrolysis indanthrone ketone light petroleum b. p. methanol methanolic potassium hydroxide method methyl minutes mixed m. p. mixture molecule nitrobenzene nitrogen obtained orange oxidation oxygen pale yellow phosphate potassium carbonate potassium hydroxide precipitate prepared prisms pyridine rearrangement requires residue room temperature salt separated sodium dithionite sodium hydroxide solid soluble solvent sulphuric acid titration trimethylgallium washed yellow needles yield