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Detection of a Radical Cation of an NADH Analogue in Two-Electron Reduction of a Protonated p-Quinone Derivative by an NADH Analogue


  • This work was partially supported by Grants-in-Aid (No. 19205019) from the Ministry of Education, Culture, Sports, Science and Technology (Japan).


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An electron-transfer pathway is preferred to a direct hydride-transfer pathway in two-electron reduction of protonated 1-(p-tolylsulfinyl)-2,5-benzoquinone by the NADH analogue 10-methyl-9,10-dihydroacridine, as has been demonstrated for the first time by ESR detection of the resulting radical cation of the acridine derivative (see picture).

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