Quarterly Journal of the Chemical Society of London, Volume 1 |
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Page 44
... Nucleophilic Reactivities : Aromatic Substitutions 1 By Gino Biggi and Francesco Pietra , Istituto diChimica Generale , Università di Pisa , 56100 Pisa , Italy Chlorine is substituted quantitatively from chloro - 2,4 - dinitrobenzene by ...
... Nucleophilic Reactivities : Aromatic Substitutions 1 By Gino Biggi and Francesco Pietra , Istituto diChimica Generale , Università di Pisa , 56100 Pisa , Italy Chlorine is substituted quantitatively from chloro - 2,4 - dinitrobenzene by ...
Page 46
... nucleophilic substitutions at unsaturated centres with high Brønsted ẞ values , 3,6 nucleophilic aromatic substitution would be expected to present an x - effect . Whether such an expectation is fulfilled can be seen from the Figure ...
... nucleophilic substitutions at unsaturated centres with high Brønsted ẞ values , 3,6 nucleophilic aromatic substitution would be expected to present an x - effect . Whether such an expectation is fulfilled can be seen from the Figure ...
Page 377
... nucleophilic character of the added solvent . On the other hand , the dramatic effect of added methanol on the product distribution clearly shows that the intervention of the nucleophilic solvent does occur in a fast step on a cationic ...
... nucleophilic character of the added solvent . On the other hand , the dramatic effect of added methanol on the product distribution clearly shows that the intervention of the nucleophilic solvent does occur in a fast step on a cationic ...
Contents
Physical organic chemistry | 1 |
Contents | 6 |
Kinetics and mechanism of electrophilic substitution of heteroaromatic compounds Part XXIV Acid | 11 |
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A2 mechanism acetic acid-catalysed addition alcohol alkaline hydrolysis Amer analysis anion aqueous aromatic benzene benzoate bond bromine cal mol-1 calculated carbon atom carbonium ion carbonyl catalysis Chem Chemistry chlorine compounds concentration conjugate conjugate acid correlation deuterium diastereomers dienamines dioxan electron pairs energy entropies of activation epoxide equation esters ether ethylene exchange experimental Figure formation glycol H₂O hydrogen hydroxide hypochlorous acid indicate intramolecular isomer isotope effects k₁ k₂ ketone kinetic MeOH methanol methanolysis methiodide method methyl mixture mmHg mol-¹ molecular molecule n-pentyl n.m.r. spectra nitration nucleophilic observed obtained olefin oxidation oxygen p-xylene parameters perchloric acid Phys polar positive proton R. J. W. Le Fèvre radical rate coefficients rate constants ratio reaction constant reactivity relative resorcinol ring sodium solution solvent steric steric effects structure studied substituent substituted substrate t-butyl Table temperature Tetrahedron thiophen trans triethylborane values