Quarterly Journal of the Chemical Society of London |
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Page 3694
... constants " so calculated for reactions in which sulphuric acid or lithium nitrate were added are not , of course , true rate constants . Such " rate constants , ” when compared with those obtained in the absence of these additions ...
... constants " so calculated for reactions in which sulphuric acid or lithium nitrate were added are not , of course , true rate constants . Such " rate constants , ” when compared with those obtained in the absence of these additions ...
Page 3741
... constants for hydroxyproline in acid , neutral , and alkaline solution . Chemical shifts ( 7 ) Coupling constants ( c./sec . ) Coupling Acid and neutral Alkaline Proton Acid Neutral Alkaline 7.66 7.1 H22 5.29 5.66 6.31 7.48 7.60 7.94 ...
... constants for hydroxyproline in acid , neutral , and alkaline solution . Chemical shifts ( 7 ) Coupling constants ( c./sec . ) Coupling Acid and neutral Alkaline Proton Acid Neutral Alkaline 7.66 7.1 H22 5.29 5.66 6.31 7.48 7.60 7.94 ...
Page 3745
... constants of the cations ( II ) are the same as those of the corresponding zwitterions ( I ) . It follows that the conformations are identical . This indeed would be expected on chemical grounds , as protonation of the carboxylate group ...
... constants of the cations ( II ) are the same as those of the corresponding zwitterions ( I ) . It follows that the conformations are identical . This indeed would be expected on chemical grounds , as protonation of the carboxylate group ...
Contents
NO PAGE | 2842 |
Mechanism of benzidine and semidine rearrangements Part XV A collective | 2864 |
By DAVID PETERS | 2901 |
Copyright | |
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absorption acetic acid acetone added adduct alcohol alkyl Amax Amer anhydride aqueous aromatic atom atomic orbitals band benzene bond bromine Calc carbon carbonyl cation CH₂ Chem chloroform chromatography cm.¹ complex compound concentration constant crystallised cyclohexane decomp decomposition derivatives dilute dimethyl distilled dried effect electron ester ethanol ether evaporated extracted filtered filtrate formation formed Found fraction gave give heated hydride hydrogen hydrolysis hydroxide infrared infrared spectrum iodide ionisation energies isomer kinetic light petroleum b. p. lithium lithium aluminium hydride mechanism methyl mixed m. p. mixture mole molecular molecule nitric oxide nitrogen Nujol observed obtained oxidation perchlorate phenyl potassium prepared proton pyridine reaction rearrangement reduced refluxed requires residue room temperature salt sodium sodium hydroxide solid solution solvent spectra steric steric effect structure substitution sulphate Table thionyl chloride transition ultraviolet values Vmax yield