Thermochemical investigation of the oxygenation of Vitamin K
RA Flowers, S Naganathan, P Dowd…
文献索引:Flowers II, Robert A.; Naganathan, Sriram; Dowd, Paul; Arnett, Edward M.; Ham, Seung Wook Journal of the American Chemical Society, 1993 , vol. 115, # 21 p. 9409 - 9416
Abstract: Discovery of a new oxygenation reaction of naphthohydroquinone anions makes possible a determination of the heat of reaction (AH,,,) of oxygen with the potassium salt derived from deprotonation of the hydroquinone form of vitamin K. From that value (-33.52 f 0.60 kcal/mol), the heat of deprotonation of vitamin KH2 (-30.03 f 1.20 kcal/mol), and the heat of deprotonation of water (-6.05 f 0.3 kcal/mol), the enthalpy change for converting ...