Chem. J. Chinese Universities ›› 1988, Vol. 9 ›› Issue (7): 692.

• Articles • Previous Articles     Next Articles

Keto-Enol Tautomerism of a Stable Free Radical——ESR and ENDOR Study on Tri(2-Deoxy-2-L-Ascorbyl) Amine Radical Anion

Wu Longmin1, Liu Zhongli1, Wang Lijuan1, Liu Youcheng1, Cheng Jinlong2   

  1. 1. Chemistry Department, Lanzhou University, Lanzhou;
    2. Analytical and Testing Center, Lanzhou University, Lanzhou
  • Received:1987-02-25 Online:1988-07-24 Published:1988-07-24

Abstract: ESR and ENDOR studies were accomplished on the free radical obtained from the oxidation of tri(2-deoxy-2-L-ascorbyl)amine in pH 8.95buffer solution. It is concluded that a keto-enol tautomeric equilibrium of the amine radical anion existed in the solution,which is believed to be the first example of keto-enol tauto-merism concerning a stable free radical.

Key words: Keto-enol tautomerism, ESR, ENDOR

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