Journal of the Chemical Society, Part 2, Pages 1201-2488The Society., 1964 "Titles of chemical papers in British and foreign journals" included in Quarterly journal, v. 1-12. |
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Page 1374
... Enol Tautomerism . - Since , in aqueous solution , oxaloacetic acid and its anions can exist as both keto and enol isomers , 1,2 separate dissociation constants can be defined for each isomer . For the keto isomer : Kalk ' = [ H + ] ...
... Enol Tautomerism . - Since , in aqueous solution , oxaloacetic acid and its anions can exist as both keto and enol isomers , 1,2 separate dissociation constants can be defined for each isomer . For the keto isomer : Kalk ' = [ H + ] ...
Page 1375
... enol isomers can dissociate to give a third proton . The ultraviolet absorption spectra of the keto and the enol forms of oxaloacetic acid in water are very different . Thus , at 280 mu the enol forms have a molar extinction co ...
... enol isomers can dissociate to give a third proton . The ultraviolet absorption spectra of the keto and the enol forms of oxaloacetic acid in water are very different . Thus , at 280 mu the enol forms have a molar extinction co ...
Page 1379
... enol isomers of oxaloacetic acid at 25 ° and I ~ 0 · 1 . PKalk ' 2-24 s.d. a2K 3.90 PKalE ' 1.89 PK32E 3.72 ... enol isomers . The molar extinction coefficient of the enol isomer appears to be unaffected by the degree of dissociation of ...
... enol isomers of oxaloacetic acid at 25 ° and I ~ 0 · 1 . PKalk ' 2-24 s.d. a2K 3.90 PKalE ' 1.89 PK32E 3.72 ... enol isomers . The molar extinction coefficient of the enol isomer appears to be unaffected by the degree of dissociation of ...
Contents
NO PAGE | 1205 |
The SN mechanism in aromatic compounds Part XXX The sydnone ring | 1213 |
NO PAGE | 1224 |
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1-phenylethyl absorption acetic acid acetone acetonitrile adducts alcohol alginic acid Amer amine aniline aqueous atom benzene bond bromide Calc calculated carbon carboxyl CH₂ Chem chloride chloroform chromatography cm.¹ complex compounds concentration corresponding crystallised derived diazomethane diphenylphosphinic dissociation constants distilled enol equation equilibrium constants ester ethanol ether evaporated experimental extracted fluorine formation formed Found fraction gave H₂O hydrazine hydrides hydrogen cyanide hydrolysis hydroxide infrared spectrum iodide ionisation isomers k₁ k₂ kcal kinetic ligand methanolysis methyl mixed m. p. mixture mmoles mole mole-¹ molecule nitrogen nucleophilic o-complex obtained optical orbitals oxaloacetic acid oxidation oxygen peaks peroxide phenols phosphate phosphine potassium prepared proton pyridine rate coefficients reaction reduced reflux requires residue room temperature rotation shown similar sodium solution solvent spectra structure substituted sulphide sulphuric t-butyl Table tetracyanoethylene titration tricyanovinyl values yield