Journal of the Chemical SocietyThe Society., 1964 "Titles of chemical papers in British and foreign journals" included in Quarterly journal, v. 1-12. |
From inside the book
Results 1-3 of 67
Page 148
... proton on carbon - 5 and yield broad singlets ( J = 0.8 c./sec . ) at 7.39 and 7-47 , respectively . Aromatic protons . The aromatic proton at carbon - 5 appears as a singlet at 3.82 and 3.90 in the p.m.r. spectra of griseofulvin and ...
... proton on carbon - 5 and yield broad singlets ( J = 0.8 c./sec . ) at 7.39 and 7-47 , respectively . Aromatic protons . The aromatic proton at carbon - 5 appears as a singlet at 3.82 and 3.90 in the p.m.r. spectra of griseofulvin and ...
Page 685
... proton 4 in sulphone ( I ) , at -80.0 c./sec . , is rather broad on account of coupling with protons 3 , 5 , and 7 . With the cis - endo - sulphide ( II ) the peaks of protons 2 and 3 are shifted to higher field ( 110.2 and -149.3 c ...
... proton 4 in sulphone ( I ) , at -80.0 c./sec . , is rather broad on account of coupling with protons 3 , 5 , and 7 . With the cis - endo - sulphide ( II ) the peaks of protons 2 and 3 are shifted to higher field ( 110.2 and -149.3 c ...
Page 983
... protons of the 2 - methyl group and the doubling from coupling to the 7 - proton . This explanation is confirmed by the spectra of 2,7 - dimethylbenzothiophen and 7 - methylbenzofuran . The 3 - proton signal in the former appears as a ...
... protons of the 2 - methyl group and the doubling from coupling to the 7 - proton . This explanation is confirmed by the spectra of 2,7 - dimethylbenzothiophen and 7 - methylbenzofuran . The 3 - proton signal in the former appears as a ...
Contents
By J K P ARIYARATNE and M L H GREEN | 1 |
The biosynthesis of fungal metabolites | 16 |
Monofluoroisoquinolines | 22 |
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absorption acetic acid acetic anhydride alkaline aluminium chloride Amer amine anhydride aphins aqueous aromatic atoms band benzene bond bromide Calc carbon Chem chloride chloroform chromatography cm.¹ complex compound concentration coupling constants crystallised crystals decomp decomposition derivatives diazomethane dilute dimethyl dioxan dried Elution equation erythroaphin-fb erythroaphins ester ethanol ether ethyl ethyl acetate evaporated EXPERIMENTAL extracted formation formed Found fraction gave halides hydrochloric acid hydrogen hydrolysis infrared infrared spectra iodide irradiated isomer ligand light petroleum m. p. and mixed maltose mixed m. p. mixture mole molecule mµ log ɛ nitrogen nuclear magnetic resonance obtained oxidation oxygen phenyl piperidine potassium prepared protoaphin protoaphin-fb proton pyridine quinone reaction recrystallised refluxed requires residue ring room temperature sample similar sodium hydroxide solution solvent spectrum structure substituted Table ultraviolet values washed yellow yield