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1-乙酰基-2, 3-吲哚二酮的光诱导氢转移反应的CIDNP研究

王歆燕1,王婷1,严宝珍1*,张艳2   

  1. 1.北京化工大学理学院,北京 100029; 2.南京大学化学系,江苏南京 2000 93
  • 收稿日期:2001-11-26 修回日期:2002-01-21 出版日期:2002-06-05 发布日期:2002-06-05
  • 作者简介:王歆燕(1977-),女,江苏泰州人,硕士研究生. *通讯联系人
  • 基金资助:

    国家自然科学基金资助项目(29975002).

PHOTO-CIDNP INVESTIGATION OF HYDROGEN TRANSFER REACTIONS OF 1-ACETYLINDOLE-2, 3-DIDONE

WANG Xin-yan1,  WANG Ting1,  YAN Bao-zhen1*,  ZHANG Yan   

  1. 1.School of Art and Science,  Beijing University of Chemical Technology, Beiji ng 100029, China;
    2.Chemistry Department, Nanjing University,  Nanjing  200093, China
  • Received:2001-11-26 Revised:2002-01-21 Online:2002-06-05 Published:2002-06-05
  • About author:*Correspondence author
  • Supported by:

    国家自然科学基金资助项目(29975002).

摘要:

采用CIDNP方法对UV光照条件下的1-乙酰基-2, 3-吲哚二酮与几类氢给体的光诱导氢转移反应进行了研究.

关键词: 1-乙酰基-2, 3-吲哚二酮(AID), CIDNP效应, 氢转移反应, 中性自由基对

Abstract:

The photoreactions of 1-acetylindole-2,  3-didone (AID) with several hydrogen  don ors in benzene-d6 and acetonitrile-d3 at room temperature were investigate d by m easurement of the chemically induced dynamic nuclear polarization (CIDNP). The polarization pattern of AID indicates an intermediate with spin density distribut ion of a σ π radical, in this case, aneutral radical AIDH· was formed.; A hydrogen attraction interaction between 3AID+* and the donors result ed in the  formation of stable neutral radical pairs,  which have triplet multiplicity and can diffuse apart to make the pair loose enough for the nuclear polarization to b e developed. The radical pairs could undergo back hydrogen transfer or separate  and diffuse and meet again to lead to the observed products.

Key words: 1-acetylindole-2, 3-didone, CIDNP effect, hydrogen abstraction, neutr al radical pairs

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