Quarterly Journal of the Chemical Society of London, Volume 6 |
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Page 1170
... attack of mono- ester anions . We consider that this is explained by the SN1 ( P ) -like , or borderline , character of the transition state for displacements at the phosphorus centre of phosphate dianions XPO , 2- with good leaving ...
... attack of mono- ester anions . We consider that this is explained by the SN1 ( P ) -like , or borderline , character of the transition state for displacements at the phosphorus centre of phosphate dianions XPO , 2- with good leaving ...
Page 1171
... attack by substituted pyridines ( see later ) , so the sensitivity to the basicity of the nucleophile does not differ for oxyanion and neutral nitrogen nucleophiles in this series . It does differ , however , for the correspond- ing ...
... attack by substituted pyridines ( see later ) , so the sensitivity to the basicity of the nucleophile does not differ for oxyanion and neutral nitrogen nucleophiles in this series . It does differ , however , for the correspond- ing ...
Page 1216
... attack ka Re 1280 345 N- subst . attack C ka ke 4 - Phenylpiperidine Me 75 430 300 110 4 - Phenylpiperidine Et 4 - Phenylpiperidine Pri 82 80 140 30 92 11 60 6 125 4 - Phenylpiperidine But ca. 100 1.26 Tropane Me 75d 670 410 140 2000 ...
... attack ka Re 1280 345 N- subst . attack C ka ke 4 - Phenylpiperidine Me 75 430 300 110 4 - Phenylpiperidine Et 4 - Phenylpiperidine Pri 82 80 140 30 92 11 60 6 125 4 - Phenylpiperidine But ca. 100 1.26 Tropane Me 75d 670 410 140 2000 ...
Contents
ISOWA 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 adducts alcohol aluminium hydride Amer amines aqueous aromatic atom attack bands benzene benzophenones benzyl bond calculated carbon tetrachloride carbonyl catalysis Chem chloride compounds concentration conformation corresponding decomposition dioxan dipole effect electron electrophilic equation ester ethanol ether ethylene experimental Figure first-order formation hydrogen hydrolysis hydroxide hydroxyl interaction ionic strength isomer k₁ k₂ ketone kinetic leaving group measured mechanism methyl methyl phosphate mixture molar Kerr constants mole mole-¹ molecular molecules nitrogen nitromethane NO₂ nucleophilic observed obtained oxidation oxyanions peroxide persulphate phenyl phenylacetic acid phosphate plots polarisability proton pyridine R. J. W. Le Fèvre R. O. C. Norman radical anion rate constants ratio reaction reactivity rearrangement reduction ring rotation similar sodium solution solvent solvolysis spectra spectrum splitting constants steric structure substituent sulphate radical anion Table temperature tetraphenylallene thiophen titanium(III values Δε ΣΔε/Σω