高等学校化学学报 ›› 1988, Vol. 9 ›› Issue (7): 692.

• 论文 • 上一篇    下一篇

一个稳定自由基的酮-烯醇互变异构——三(2-去氧-2-L-抗坏血酸基)胺自由基负离子的ESR和ENDOR研究

吴隆民1, 刘中立1, 王丽娟1, 刘有成1, 程金龙2   

  1. 1. 兰州大学化学系;
    2. 兰州大学分析测试中心
  • 收稿日期:1987-02-25 出版日期:1988-07-24 发布日期:1988-07-24
  • 通讯作者: 刘有成

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

摘要: 在pH8.95的缓冲溶液中氧化三(2-去氧-2-L-抗坏血酸基)胺得一对应的自由基负离子,对其进行了ESR和ENDOR研究。结果表明该自由基负离子在溶液中以酮-烯醇互变异构体存在,这可能是在稳定自由基中发现存在酮-烯醇互变异构平衡的首例。

关键词: 酮-烯醇互变异构, ESR, ENDOR

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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