Quarterly Journal of the Chemical Society of London, Part 4, Pages 3513-4668 |
From inside the book
Results 1-3 of 71
Page 3819
... proton at C , gives a sharp doublet ( at 5-83 ) . At lower field there is a broad signal from the remaining two protons in humulinic acid A. One is the 4 - hydroxyl proton and the other can only be that of the enolized 1,3 - dicarbonyl ...
... proton at C , gives a sharp doublet ( at 5-83 ) . At lower field there is a broad signal from the remaining two protons in humulinic acid A. One is the 4 - hydroxyl proton and the other can only be that of the enolized 1,3 - dicarbonyl ...
Page 4045
... proton magnetic resonance spectrum of a solution in dimethyl sulphoxide , which in the aromatic region contains a singlet at 2.04 assignable to the 3 - proton , a quartet at 1-84 ( J1 = 8 c./sec . , J2 = 2 c./sec . ) due to the 5 ...
... proton magnetic resonance spectrum of a solution in dimethyl sulphoxide , which in the aromatic region contains a singlet at 2.04 assignable to the 3 - proton , a quartet at 1-84 ( J1 = 8 c./sec . , J2 = 2 c./sec . ) due to the 5 ...
Page 4656
... proton [ asterisk in ( III ) ] ( multiplet at 5-28 ) caused the OH OH &豆 NMe MeO MeO ( 1 ) H H H H H H Me NMe NMe MeO Me ( II ) ( III ) ( IV ) H H H Me H OMe ( VI ) Me ( V ) B - proton doublets to collapse to singlets . Confirmation of ...
... proton [ asterisk in ( III ) ] ( multiplet at 5-28 ) caused the OH OH &豆 NMe MeO MeO ( 1 ) H H H H H H Me NMe NMe MeO Me ( II ) ( III ) ( IV ) H H H Me H OMe ( VI ) Me ( V ) B - proton doublets to collapse to singlets . Confirmation of ...
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