Quarterly Journal of the Chemical Society of London, Volume 6 |
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Page 1175
... base buffer , pH 5.08 , 0.1-0.4M 4 5.67 × 10-6 Acetate The same , in D2O 4.11 X 10-6 TABLE 6 2 - Nitrophenyl ester ( le ) Hydroxide 0.01-0.03M - NaOH 3 7.7 Phosphate 0.05 50 % free base buffer , pH 6.6 , 0.25M 6 1.33 × 10-4 Rate ...
... base buffer , pH 5.08 , 0.1-0.4M 4 5.67 × 10-6 Acetate The same , in D2O 4.11 X 10-6 TABLE 6 2 - Nitrophenyl ester ( le ) Hydroxide 0.01-0.03M - NaOH 3 7.7 Phosphate 0.05 50 % free base buffer , pH 6.6 , 0.25M 6 1.33 × 10-4 Rate ...
Page 1184
... base 3.64 0.01м - Phosphate , 50 % free base 6.30 0.01M - Carbonate , 50 % free base 9.72 0-01M - NaOH 11.36 0-01M - NaOH 12.29 1.24 × 10-4 2-3 × 10-4 2.37 × 10-4 2.5 × 10-4 2.36 × 10-4 2 - Carboxyphenyl 3 - nitrophenyl phosphate ( 3b ) ...
... base 3.64 0.01м - Phosphate , 50 % free base 6.30 0.01M - Carbonate , 50 % free base 9.72 0-01M - NaOH 11.36 0-01M - NaOH 12.29 1.24 × 10-4 2-3 × 10-4 2.37 × 10-4 2.5 × 10-4 2.36 × 10-4 2 - Carboxyphenyl 3 - nitrophenyl phosphate ( 3b ) ...
Page 1188
... base pH 10-0 9.6 × 10-2 k2 + 3 B n - Butylamine 10.6 10 % Free base pH 10.0 1.9 × 10-1 NO2 NO2 ( 3 ) ( 4 ) SCHEME intermediate . In the case of 4 - nitrophenyl phosphate dianion ( 1 ; X = O.PO , 2 ) the complete transfer of a proton to ...
... base pH 10-0 9.6 × 10-2 k2 + 3 B n - Butylamine 10.6 10 % Free base pH 10.0 1.9 × 10-1 NO2 NO2 ( 3 ) ( 4 ) SCHEME intermediate . In the case of 4 - nitrophenyl phosphate dianion ( 1 ; X = O.PO , 2 ) the complete transfer of a proton to ...
Contents
ISCHA 013 | 1034 |
Physical organic chemistry | 1035 |
Studies of the reactions of the anhydrosulphites of ahydroxycarboxylic acids Part IV Steric | 1044 |
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2,4-dinitrophenyl absorption acetic acid aci-anion acid anhydrosulphite addition adducts alcohol Amer amine aqueous aromatic ation atom attack bands benzene benzyl bond buffer calculated carbon carbon tetrachloride carbonyl catalysis Chem chloride compounds concentration conformation corresponding decomposition derived dioxan dipole effect electron electrophilic equation ester ethanol ether ethylene experimental Figure first-order formation formed hydride hydrogen hydrolysis hydroxide hydroxyl interaction isomer k₁ k₂ kinetic leaving group measured mechanism methyl mixture molar mole mole-¹ molecular molecules nitrogen nitromethane NO₂ nucleophilic observed obtained oxidation oxyanions peroxide persulphate phenyl phenylacetic acid phosphate plot proton pyridine R. J. W. Le Fèvre R. O. C. Norman radical anion rate constants ratio reaction reactivity reduction ring rotation showed similar sodium solution solvent solvolysis spectra spectrum splitting constants steric structure studied substituent sulphate radical anion sulphur Table temperature thiophen titanium(III values yield ΣΔε/Σω