Quarterly Journal of the Chemical Society of London |
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Page 1027
... colour , depends initially on the conversion of the 2 - deoxypentose under acid conditions into w - hydroxylævulaldehyde . THE specificity of the Dische reaction ( Mikrochemie , 1930 , 8 , 4 ) is based on the fact that deoxyribonucleic ...
... colour , depends initially on the conversion of the 2 - deoxypentose under acid conditions into w - hydroxylævulaldehyde . THE specificity of the Dische reaction ( Mikrochemie , 1930 , 8 , 4 ) is based on the fact that deoxyribonucleic ...
Page 1260
... colour . This particular colour was chosen because Constable ( Proc . Roy . Soc . , 1929 , A , 125 , 378 ) had shown it to be obtained only over a fairly narrow range of film thickness . A disc of iron of the same composition ...
... colour . This particular colour was chosen because Constable ( Proc . Roy . Soc . , 1929 , A , 125 , 378 ) had shown it to be obtained only over a fairly narrow range of film thickness . A disc of iron of the same composition ...
Page 1703
... colours . Partly methylated aldohexoses give rise to brown colours , sometimes with a tint of red , fully methylated aldohexoses giving a characteristic maroon colour . On the other hand , methylated aldopentoses give cherry- red colours ...
... colours . Partly methylated aldohexoses give rise to brown colours , sometimes with a tint of red , fully methylated aldohexoses giving a characteristic maroon colour . On the other hand , methylated aldopentoses give cherry- red colours ...
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Common terms and phrases
absorption acetic anhydride acetone acetyl added alcohol alkaline alunite Amer amine ammonia anhydrous anilide aqueous sodium atom benzene boiling bromine trifluoride Calc carbonate CHâ‚‚ Chem chloroform colour colourless needles compound condensation containing cooled crystallised crystals cyanide cyclisation D.Sc decomp derivatives dilute dissolved distilled dried equiv ester ethanol ethyl acetate evaporated EXPERIMENTAL extracted with ether filtered filtrate fluoride formation formed Found fraction gave give heated under reflux hydrochloric acid hydrogen chloride hydrolysis iodide iodine ions isolated kcals ketone light petroleum b. p. liquid melting method methyl minutes mixed m. p. molecule nitrate nitrile nitrogen obtained oxalate oxide oxime oxygen pickeringite picrate piperidine potassium potassium hydroxide precipitate prepared prisms pyridine reductive dissolution removed requires residue room temperature salt semicarbazone separated sodium hydroxide solid soluble solvent specimen sulphate sulphuric acid values washed xylose yellow needles yield