17660-74-1Relevant articles and documents
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Jefford et al.
, p. 1654 (1977)
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Grob,Weiss
, p. 1390,1392 (1960)
LOW-MOLECULAR COMPOUND, POLYMER, MATERIAL FOR ELECTRONIC DEVICES, COMPOSITION FOR ELECTRONIC DEVICES, ORGANIC ELECTROLUMINESCENT ELEMENT, ORGANIC SOLAR CELL ELEMENT, DISPLAY AND LIGHTING EQUIPMENT
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Page/Page column 63, (2012/09/21)
A subject for the invention is to provide compounds where a film formation can be made by a wet film formation method, a heating temperature at the film formation is low, the film formed therefrom has high stability, and the other layers can be laminated thereon by a wet film formation method or another method. The compounds are usable as a material for electronic device which decreases little in charge transport efficiency or luminescent efficiency and which have excellent driving stability. The invention resides in a compound and a polymer which are characterized by having a elimination group of a specific structure and in an organic compound characterized by having a elimination group having a low elimination temperature.
Ketonization equilibria of phenol in aqueous solution
Capponi, Marco,Gut, Ivo G.,Hellrung, Bruno,Persy, Gaby,Wirz, Jakob
, p. 605 - 613 (2007/10/03)
The two keto tautomers of phenol (1), cyclohexa-2,4-dienone (2) and cyclohexa-2,5-dienone (3), were generated by flash photolysis of appropriate precursors in aqueous solution, and the pH-rate profiles of their enolization reactions, 2 → 1 and 3 → 1, were measured. The rates of the reverse reactions, 1 → 2 and 1 → 3, were determined from the rates of acid-catalyzed hydron exchange at the ortho- and para-positions of 1; the magnitude of the kinetic isotope effect was assessed by comparing the rates of hydrogenation of phenol-2t and -2d. The ratios of the enolization and ketonization rate constants provide the equilibrium constants of enolization, pKE(2, aq, 25°C) = -12.73 ± 0.12 and pKE(3, aq, 25°C) = -10.98 ± 0.15. Combination with the acidity constant of phenol also defines the acidity constants of 2 and 3 through a thermodynamic cycle. These ketones are remarkably strong carbon acids: pKa(2) = -2.89 ± 0.12 and pKa(3) = -1.14 ± 0.15. They disappear by proton transfer to the solvent with lifetimes, τ(2) = 260 μs and τ(3) = 13 ms, that are insensitive to pH in the range from 3-10.