Quarterly Journal of the Chemical Society of London

2-deoxy-D-galactose 4-isopropylidene a-amyrin acetic acid acetone added alcohol alkaline aluminium aluminium chloride Amer ammonia anhydride anhydrous atoms bands benzene benzoate boiling bond bromide butenolide Calc carbonate catalyst Chem chloroform colour compound condensation cooled corresponding crude crystallised crystals D-galactose decomp derivative described dilute dioxan diphenyl phosphoryl chloride dissolved distilled dried ester ethanol ethyl ethylene evaporated extracted with ether filtered filtrate Found fraction gave heated under reflux hydrochloric acid hydrogen bromide hydrogen chloride hydrolysis iodide isolated keten ketone light petroleum b. p. liquid lithium lithium aluminium hydride methanolic hydrogen chloride methiodide method minutes molecule needles obtained oxide phosphoric acid phosphoryl chloride picrate plates precipitate prepared pyridine reaction mixture reduction removed requires residue room temperature salt semicarbazone separated sodium hydroxide solid solvent structure sulphuric acid tetralone titration trichloride washed yellow yield zinc