波谱学杂志 ›› 1984, Vol. 1 ›› Issue (5): 421-427.

• 研究论文 • 上一篇    下一篇

芳胺-二苯酮光化夺氢反应活泼自由基的ESR研究

周建威1, 徐广智1, 唐有祺1, 李橦2, 曹维孝2, 冯新德2   

  1. 1. 中国科学院化学研究所;
    2. 北京大学化学系
  • 收稿日期:1984-04-26 出版日期:1984-09-05 发布日期:2018-01-25
  • 基金资助:
    中国科学院科学基金资助课题

ESR STUDY ON THE FREE RADICALS IN THE PHOTOCHEMICAL HYDROGEN ABSTRACTION REACTION

Zhou Jianwei1, Xu Guangzhi1, Tang Youqi1, Li Tong2, Cao Weixiao2, Feng Xinde2   

  1. 1. Institute of Chemistry, Academia Sinica;
    2. Department of Chemistry. Peking University
  • Received:1984-04-26 Online:1984-09-05 Published:2018-01-25

摘要: 本文用自由基捕捉剂与ESR相结合的方法系统研究了各种取代苯胺与二苯酮光化夺氢反应中的活泼自由基。找出了形成N-中心及C-中心自由基的条件:即当芳胺有N上氢和α-C上氢时,优先形成N-中心自由基;仅当无N上氢时,才形成C-中心自由基。

Abstract: Active free radicals in the photochemical hydrogen abstraction reaction between benzophenone and aromatic amines have been studied systematically by combination of spin trapping reagents and ESR.The results show that.(l) for primary and secondary amines,benzophenone abstracts H more efficiently from N than from α-C of amines to form N-centered radical (2) for tertiary amines, the abstraction of H is taken place on the α-C of amines to form C-centere dradical.