Quarterly Journal of the Chemical Society of London, Volume 8, Pages 997-1884

acetic acid acetic anhydride acetone added alcohol alumina Amer amine aqueous atom Autoxidative azide benzene bromide Calc carbon CH₂ chelate Chem chloride chloroform chromatography cm.¹ CO₂H colourless compound cooled crystallised cyclisation decomp derivatives dilute dimethyl dissolved distilled dried dropwise Elution ester ethyl acetate EtOH evaporated extracted with ether filtered filtrate Found fraction gave give heated under reflux hydrazone hydrochloric acid hydrogen hydrolysis i.r. spectrum identical irradiation isolated isomer ketone light petroleum b.p. lithium aluminium hydride mass spectrum melanin methanol methyl mixed m.p. mixture mmoles mole n.m.r. spectrum needles nitrogen obtained olefin oxide phenolic potassium precipitate preparative t.l.c. protons pyridine reaction rearrangement reduced requires residue ring room temperature salt silica gel sodium hydroxide solid solution solvent spectra stirred treated vacuo VIII washed with water yellow yield