Quarterly Journal of the Chemical Society of London, Pages 3324-4156 |
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Page 3316
... methyl 4 : 6-0 - ethylidene- B - D - glucoside by treatment of methyl B - D - glucopyranoside with 1 : 1 - dimethoxyethane in the presence of sulphuric acid . That this reagent differs from paraldehyde in not giving oxydiethylidene ...
... methyl 4 : 6-0 - ethylidene- B - D - glucoside by treatment of methyl B - D - glucopyranoside with 1 : 1 - dimethoxyethane in the presence of sulphuric acid . That this reagent differs from paraldehyde in not giving oxydiethylidene ...
Page 3500
... methyl anhydrodi - O - methylfulvate to the dihydro - derivative methyl deoxydi - O - methylfulvate , a compound that was inert to aqueous or alcoholic acids or bases and had an ultraviolet absorption spectrum very like that of methyl ...
... methyl anhydrodi - O - methylfulvate to the dihydro - derivative methyl deoxydi - O - methylfulvate , a compound that was inert to aqueous or alcoholic acids or bases and had an ultraviolet absorption spectrum very like that of methyl ...
Page 3801
... Methyl Ethers of Diosgenin . By W. J. PEAL . THE preparation of the methyl 3 : 5 - cycloethers of the sterols is one of the standard methods employed for the protection of these substances at the 33 - hydroxyl group and the 5 : 6 ...
... Methyl Ethers of Diosgenin . By W. J. PEAL . THE preparation of the methyl 3 : 5 - cycloethers of the sterols is one of the standard methods employed for the protection of these substances at the 33 - hydroxyl group and the 5 : 6 ...
Contents
ii | 2842 |
Catalytic hydrogenation | 2845 |
Garden J F and Thomson R H | 2851 |
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Common terms and phrases
4-triazine absorption acetic acid acetic anhydride acetone acidified added alcohol alkali alkyl Amer amine aqueous sodium atom band benzene benzyl boiling bromine Calc carbonate carbonyl Chem chloroform chromatography CO₂H colourless compound concentration containing cooled crystallised cyclisation decomp derivative diethyl dilute dioxan dioxide diphenyl dissolved distilled dried eluted ester ethanol ethyl acetate evaporated filtered filtrate fluorene formation formed Found fraction gave give H₂O heated hydrochloric acid hydrogen chloride hydrolysis infrared iodide isatin isolated ketone lactone light petroleum b. p. lithium aluminium hydride m. p. and mixed methyl mixed m. p. mixture mole needles nitric acid nitrogen obtained oxidation perchloric phenyl potassium hydroxide precipitate prepared prisms pyridine reaction reagent reduced refluxed requires residue room temperature salt separated sodium hydroxide solid solution solvent spectra structure sulphuric acid Table titration washed yellow yield