Journal of the Chemical Society

absorption acetic acid acetone added adduct alcohol alumina aluminium Amer anhydride aqueous atom band benzene bond boron bromide Calc carbonyl catalyst Chem chloride chloroform chromatography chromium(II colourless complex compound concentrated constants corresponding crystallised decomp derivatives dilute dimethyl dimethylformamide dioxan dissolved distilled diyne dried eluted ester ethanol ethyl acetate evaporated EXPERIMENTAL filtered filtrate Found fraction gave gibberellin give H₂O heated under reflux hydride hydrochloric acid hydrogen chloride hydrolysis infrared infrared spectrum iodide isolated isomer ketone ligand light petroleum b. p. lithium lithium aluminium hydride methyl ester mixed m. p. mixture mmoles molar mole molecular molecules needles nitrate nitrogen obtained oxidation phenyl polymer potassium precipitate prepared proton pyridine reaction reduction requires residue ring room temperature sodium borohydride sodium hydroxide solid soluble solution solvent spectra structure Table ultraviolet vacuo values Vmax washed yellow yield