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. pKa2k ' 3.90 PKale 1.89 pKa2E 3.72 PKaзE ... enol isomers . The molar extinction coefficient of the enol isomer appears to be unaffected by the degree of ...
... enol isomers of oxaloacetic acid at 25 ° and I ~ 0.1 . PKalk ' 2.24 s.d. pKa2k ' 3.90 PKale 1.89 pKa2E 3.72 PKaзE ... enol isomers . The molar extinction coefficient of the enol isomer appears to be unaffected by the degree of ...
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1-methylheptyl 1-phenylethyl bromide absorption acetic acid acetone acetonitrile adducts alcohol Amer amine anhydride aniline aqueous atom benzene bond Calc calculated carbon carboxyl Chem chloroform chromatography complex compounds concentration correlation crystallised cyclopropane derived diazomethane diphenylphosphinic dissociation constants distilled enol equation equilibrium constants ester ethanol ether experimental extracted fluorine formation Found fraction gave H₂O halides hydrazine hydrides hydrogen cyanide hydrolysis hydroxide infrared spectrum ionisation isomers k₁ k₂ kcal kinetic ligand methanolysis mixed m. p. mixture mmoles mole mole-¹ molecular molecules nitrogen nucleophilic o-complex obtained oleyl alcohol optical orbitals oxaloacetic acid oxidation oxygen peak phenols phosphate phosphine picryl potassium prepared proton pyridine rate coefficients rate constants reaction reflux requires residue rotation shown similar sodium solution solvent spectra structure substituted sulphide t-butyl methyl t-butyl peroxide Table tetracyanoethylene titration toluene-p-sulphonate values yield