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Page 229
... mixed m . p . 161-162 ° . Fraction 11. Chromatography of the syrup ( 59 mg . ) , which had [ α ] » + 88 ° ( c 0 · 33 ) , showed 2 : 34 - tri - O - methylgalactose ( RG 0 · 70 ) and a trace of an unknown sugar ( RG 0.52 ) . The main ...
... mixed m . p . 161-162 ° . Fraction 11. Chromatography of the syrup ( 59 mg . ) , which had [ α ] » + 88 ° ( c 0 · 33 ) , showed 2 : 34 - tri - O - methylgalactose ( RG 0 · 70 ) and a trace of an unknown sugar ( RG 0.52 ) . The main ...
Page 324
... mixed bases were separated by base - exchange chromatography into forty fractions , from each of which crystals separated . On the basis of the m . p.s and mixed m . p.s , fractions 5-22 were united and worked up to give trans - isomer ...
... mixed bases were separated by base - exchange chromatography into forty fractions , from each of which crystals separated . On the basis of the m . p.s and mixed m . p.s , fractions 5-22 were united and worked up to give trans - isomer ...
Page 347
... mixed m . p . 76-78 ° . The residual mixed isomeric acetates ( 21 g . ) on cyclisation behaved as described under ( i ) . ( iii ) The trans - trans - cyclohexyl acetate ( XIe ) ( 20 g . ) , submitted to cyclisation , was substantially ...
... mixed m . p . 76-78 ° . The residual mixed isomeric acetates ( 21 g . ) on cyclisation behaved as described under ( i ) . ( iii ) The trans - trans - cyclohexyl acetate ( XIe ) ( 20 g . ) , submitted to cyclisation , was substantially ...
Contents
19 | 4 |
The effect of temperature on azonitriles as initiators in the polymerization of styrene | 12 |
The kinetics and mechanisms of addition to olefinic substances Part V Products | 36 |
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absorption acetic acid acetic anhydride alcohol alkoxides Amer amine ammonia aniline anion aromatic atoms benzene boiling bromine buffer C₁ Calc carbonate catalysed cation Chem chloride chromatography colourless complex compound concentration constant containing crystallised decomp derivative diazotisation dilute dinitrogen trioxide disaccharide dissolved distilled equation ester ethanol ether ethylenediamine evaporated EXPERIMENTAL extracted filtered filtrate formation Found fraction gave give H₂O halides heated hydrochloric acid hydrogen hydrogen chloride hydrolysis hypochlorous iodide ionic isolated isomer K₁ kinetic ligand light petroleum b. p. m. p. and mixed mannose methyl mixed m. p. mixture mole mole-¹ molecular molecule needles niobium nitrate nitrosating nitrosonium nitrous acid obtained oxidation pentafluoride perchloric acid phenylhydrazine potassium precipitate prepared prisms pyridine rate-constants reaction reactivity refluxed requires residue resin salt silver sodium hydroxide solid solvent spectra stoicheiometric sugar sulphuric acid syrup Table values yellow yield