Quarterly Journal of the Chemical Society of London, Volume 1 |
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Results 1-3 of 77
Page 264
... elimination , derived from the rate constants at different temperatures shown in Table 1 are : for elimination , AH = 22.2 kcal./mole1 , AST - 1 cal . deg.1 mole1 ; and for exchange 19.6 kcal / mole 1 , AS 4 cal . deg.1 mole ̄1 . AHI ...
... elimination , derived from the rate constants at different temperatures shown in Table 1 are : for elimination , AH = 22.2 kcal./mole1 , AST - 1 cal . deg.1 mole1 ; and for exchange 19.6 kcal / mole 1 , AS 4 cal . deg.1 mole ̄1 . AHI ...
Page 268
... elimination of 9 - fluorenylmethanol occurs by an E1cB mechanism . The rate of B - hydrogen exchange exceeds that of elimination and the mechanism is established in a manner similar to that for the reaction in D2O , by analysis of the ...
... elimination of 9 - fluorenylmethanol occurs by an E1cB mechanism . The rate of B - hydrogen exchange exceeds that of elimination and the mechanism is established in a manner similar to that for the reaction in D2O , by analysis of the ...
Page 272
... elimination diminish . A further increase in the proportion of t - butyl alcohol causes a sharp increase in the rate constants for elimin- ation and leads to complete suppression of isotope ex- change . The elimination of ( Id ) is no ...
... elimination diminish . A further increase in the proportion of t - butyl alcohol causes a sharp increase in the rate constants for elimin- ation and leads to complete suppression of isotope ex- change . The elimination of ( Id ) is no ...
Contents
Physical organic chemistry | 1 |
Topochemistry Part XXX Crystal and molecular structures of chalcone | 11 |
Conformational studies Part I Crystal and molecular structures of cis12dipchlorobenzoyl and cis | 17 |
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4-nitroaniline A. R. Katritzky acetic acid activation energy alcohol Amer amine anion aqueous aromatic aryl-methyl ation axial benzene bond bond dissociation energies bromination calculated carbanion carbon acids catalyst Chem chemical shifts Chemistry chloride compounds concentration conformation corresponding coupling constants crystal cyclohexane derivatives deviations dilute dimethyl sulphoxide dipole electron equation ether ethylene experimental Figure fluorene formation fraction H₂O hydrocarbons hydroxide increase indicators interactions intermediate ionisation isomer isomerization isotope effect k₁ k₂ kcal kcal./mole kinetic Mc./sec measured mechanism methanol methyl mixture mole mole-¹ molecular molecules n.m.r. spectra nitrogen nucleophilic observed obtained oxide oxygen parameters phenyl Phys piperidine proton pyridines R. P. Bell radical rate constants ratio reaction relative ring selenophen shown shows signal sodium solution solvent spectrum structure substituted t-butyl Table temperature Tetrahedron thiophen transition tri-o-thymotide triethylamine triphenylmethane wave