Quarterly Journal of the Chemical Society of London, Volume 6 |
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Page 1204
... mechanism , according to the Hammett - Zucker hypo- thesis . As the validity of this hypothesis is in doubt ( see ref . 12 ) , the correlation of log kobs with Ho is not conclusive evidence for an Al mechanism but other evidence ...
... mechanism , according to the Hammett - Zucker hypo- thesis . As the validity of this hypothesis is in doubt ( see ref . 12 ) , the correlation of log kobs with Ho is not conclusive evidence for an Al mechanism but other evidence ...
Page 1205
... mechanism for the hydrolysis of esters can vary with acidity has recently been demonstrated , 13 and a change of mechanism in the hydrolysis of p - nitro- benzylidene diacetate is not unexpected . The effect of substituents on the rates ...
... mechanism for the hydrolysis of esters can vary with acidity has recently been demonstrated , 13 and a change of mechanism in the hydrolysis of p - nitro- benzylidene diacetate is not unexpected . The effect of substituents on the rates ...
Page 1206
... mechanism for the hydrolysis can then be written as in Scheme 2. In this mechanism OCOME than for the unobserved Al mechanism . The heat of formation of the ion ( I ) in the gas phase is estimated 16 to be 40-60 kJ mole - 1 less than ...
... mechanism for the hydrolysis can then be written as in Scheme 2. In this mechanism OCOME than for the unobserved Al mechanism . The heat of formation of the ion ( I ) in the gas phase is estimated 16 to be 40-60 kJ mole - 1 less than ...
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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absorption acetic acid activation added addition alcohol Amer amine anhydrosulphite anion appears aqueous aromatic assigned atom attack bands base benzene bond buffer calculated carbon carbon tetrachloride Chem chloride compared compounds concentration conformation containing corresponding decomposition derived described determined discussed effect electron energy equation ester ether evidence excess expected experimental experiments factors Figure followed formation formed further gave give given hydrogen hydrolysis increase indicate interaction involving kinetic less measured mechanism method methyl MICHIGAN mixture molecular molecules nitrogen nucleophilic observed obtained occurs organic oxidation phenyl phosphate plot position possible prepared presence proton pyridine radical radical anion rate constants ratio reaction reactivity reduction relative reported requires respectively ring showed shown similar sodium solution solvent spectra spectrum splitting structure studied substituent suggested Table temperature transition University values yield