59862-51-0Relevant academic research and scientific papers
Kinetics of photoreduction of 9,10-phenanthrenequinone in the presence of amines and polymethylbenzenes
Shurygina,Chesnokov,Lopatin,Cherkasov,Abakumov
, p. 2485 - 2489 (2004)
A study of the kinetics of photoreduction of 9,10-phenanthrenequinone in the presence of hydrogen donors (para-substituted N,N-dimethylanilines and polymethylbenzenes) showed that plots of the quantum yield of photoreduction (φH) and apparent reaction rate constant (kH) vs. oxidation potential of hydrogen donors are extreme. In the presence of amines, kH and φH increase, as a whole, whereas they decrease in the presence of polymethylbenzenes. In coordinates φH- ΔGe (ΔGe is the change in the free energy of electron transfer) for pairs quinone-H donor, φH increases with ΔGe approaching to zero. For the amine series, this effect is mainly in the exothermic region of ΔGe (ΔGe e > 0).
Products of photoreduction of 9,10-phenanthrenequinone in the presence of N,N-dimethylanilines and polymethylbenzenes
Shurygina,Kurskii,Chesnokov,Abakumov
, p. 1459 - 1466 (2008/09/17)
Photoreduction of 9,10-phenanthrenequinone (PQ) in the presence of p-substituted N,N-dimethylanilines and polymethylbenzenes affords corresponding phenolethers as primary products. In the subsequent process shielded from light, phenolethers, which were formed by photoreaction of PQ with N,N-dimethylanilines, were quantitatively converted to give corresponding ketols. Phenolethers of 9,10-phenanthrenequinone and polymethylbenzenes are rearranged only under irradiation and in the presence of second molecule of PQ to form ketols. Stability of phenolethers?is determined by redox properties and structure of hydrogen donors.
