Quarterly Journal of the Chemical Society of London, Part 4, Pages 3513-4668 |
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Page 3741
... alkaline solution . Chemical shifts ( 7 ) Coupling constants ( c./sec . ) Coupling Acid and neutral Alkaline Proton Acid Neutral Alkaline J20-30 7.66 7.1 122-3b 10.44 9.4 H3a H22 5.29 5.66 6.31 7.48 7.60 7.94 √3a - 4b 1.41 2.4 H3b 7.66 ...
... alkaline solution . Chemical shifts ( 7 ) Coupling constants ( c./sec . ) Coupling Acid and neutral Alkaline Proton Acid Neutral Alkaline J20-30 7.66 7.1 122-3b 10.44 9.4 H3a H22 5.29 5.66 6.31 7.48 7.60 7.94 √3a - 4b 1.41 2.4 H3b 7.66 ...
Page 3744
... alkaline solution differ considerably from those observed in neutral or acid solution ; thus the assignments for the neutral solutions cannot be made without further experiments . They were obtained as follows . 6N - NaOD solution was ...
... alkaline solution differ considerably from those observed in neutral or acid solution ; thus the assignments for the neutral solutions cannot be made without further experiments . They were obtained as follows . 6N - NaOD solution was ...
Page 4304
... alkaline oxidation . In the former case , the spectra were also some- what asymmetric about the base - line ( e.g. , Fig . 2 ) . The coupling constants obtained from the resorcinols by oxidation with alkaline ferricyanide and with acid ...
... alkaline oxidation . In the former case , the spectra were also some- what asymmetric about the base - line ( e.g. , Fig . 2 ) . The coupling constants obtained from the resorcinols by oxidation with alkaline ferricyanide and with acid ...
Contents
NO PAGE | 3528 |
The adsorption of stearic acid from solution by oxide adsorbents | 3535 |
The effect of pressure of the electrical conductivity of aqueous mixed electrolyte | 3548 |
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absorption acetic acid acetic anhydride acetone acetyl added alcohol alkaline aluminium Amer amine atoms band benzene benzyl boiling bond bromide Calc carbon cations CH₂ chabazite Chem chloride chloroform chromatography cm.¹ colistin compounds concentration constant crystallised crystals decomp derivatives dilute dimethyl dimethylformamide dioxan dissolved distilled dried ester ethanol ether ethyl acetate evaporated extracted filtrate formation formed Found fraction gave give heated hydrochloric acid hydrochloride hydrogen hydrolysis iodide isomer ketone lithium lithium aluminium hydride m. p. and mixed mixed m. p. mixture mole molecules needles nitrate nitric acid nitrogen o-xylene obtained optical oxide oxygen phenyl phosphine picrate polymyxin potassium precipitate prepared prisms proton pyridine reaction recrystallised reduced refluxed requires residue resonance room temperature salt sodium hydroxide solution solvent spectra stirred structure substitution sulphone sulphuric acid Table tetrahydrofuran values washed yellow yield