Quarterly Journal of the Chemical Society of London, Part 3 |
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Page 2898
... removed by distillation at atmospheric pressure . Methyl iodide ( 6 g . , 3 mol . ) was added , and the mixture boiled under reflux for 2.5 hr . , cooled , and evaporated to dryness . The residue was extracted ( Soxhlet ) with hot ethyl ...
... removed by distillation at atmospheric pressure . Methyl iodide ( 6 g . , 3 mol . ) was added , and the mixture boiled under reflux for 2.5 hr . , cooled , and evaporated to dryness . The residue was extracted ( Soxhlet ) with hot ethyl ...
Page 2899
... removed by precipitation from the cold solution by addition of acetone . Solvents were removed in vacuo to give syrupy 5 - nitro - 1 ( B - D - ribofuranosyl ) glyoxal- ine - 4 - carboxyamide chromatographically pure ( see Tables 3 and 5 ) ...
... removed by precipitation from the cold solution by addition of acetone . Solvents were removed in vacuo to give syrupy 5 - nitro - 1 ( B - D - ribofuranosyl ) glyoxal- ine - 4 - carboxyamide chromatographically pure ( see Tables 3 and 5 ) ...
Page 3068
... removed , and the crude 5 - ethoxycarbonylisothiazole - 4 - carboxylic acid ( 2 · 0 g . ) was dissolved in aqueous ammonia ( d 0.88 ; 25 c.c. ) . After 12 hr . , excess of ammonia was removed at 100 ° and the solution , on acidification ...
... removed , and the crude 5 - ethoxycarbonylisothiazole - 4 - carboxylic acid ( 2 · 0 g . ) was dissolved in aqueous ammonia ( d 0.88 ; 25 c.c. ) . After 12 hr . , excess of ammonia was removed at 100 ° and the solution , on acidification ...
Contents
ABEL E W Bennett M A and Wilkinson G | 2323 |
Bourne E J Hartigan J and Weigel H | 2332 |
Clark E R | 2344 |
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1,3,5-trinitrobenzene absorption acetic acid acetic anhydride acetone added alcohol alkaline alkyl Amer amine ammonia anhydride atom benzene boiling bond bromide Calc carbon Chem chloride chloroform chromatography complex compound concentration constant cooled crystallised crystals curve decomp derivatives diethylamine dilute dimer dioxan dioxide dissolved distilled dried eluted ester ethanol evaporated filtered filtrate formation formed Found fraction gave give glycollic acid glyoxylic acid heated hydride hydrochloric acid hydrolysis hydroxide infrared infrared spectrum iodide isolated isomer K₁ light petroleum b. p. lithium lithium aluminium hydride m. p. and mixed methyl methyl iodide mixed m. p. mixture mole molecular molecule nitrogen obtained oxidation oxygen perchlorate picrate polymer potassium precipitate prepared prisms pyridine reaction reduced refluxed requires residue room temperature salt sodium hydroxide solid solvent spectra stirred structure sulphuric acid Table titration ultraviolet values washed yield