影像科学与光化学 ›› 1991, Vol. 9 ›› Issue (2): 141-145.DOI: 10.7517/j.issn.1674-0475.1991.02.141

• 研究简报 • 上一篇    下一篇

光诱导反应机理研究 ⅩⅦ.ESR波谱法研究多氯甲烷对降冰片二烯的光敏化加成反应机理

郭燕1, 樊美公1, 雷学工2, 刘有成2   

  1. 1. 中国科学院感光化学研究所 北京 100101;
    2. 兰州大学应用有机化学国家实验室 兰州 730000
  • 收稿日期:1989-08-03 修回日期:1990-04-12 出版日期:1991-05-20 发布日期:1991-05-20
  • 通讯作者: 樊美公
  • 基金资助:
    国家自然科学基金

STUDIES OF LIGHT INDUCED ORGANIC REACTION MECHANISM ⅩⅦ. ESR SPECTROSCOPY STUDIES OF PHOTOSENSITIZED ADDI-TION REACTION MECHANISM OF POLYCHLOROMETHANE AND NORBORNADIENE

Guo YAN1, FAN MEI-GONG1, LEI XUE-GONG2, LIU YOU-CHENG2   

  1. 1. Institute of Photographic Chemistry, Academia Sinica, Beijing, 100101;
    2. National Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000 P, R. Chinit
  • Received:1989-08-03 Revised:1990-04-12 Online:1991-05-20 Published:1991-05-20

摘要: 在以前的研究工作中[1]我们已经证明芳胺可以有效地光敏化多氯甲烷对双环[2,2,1]-2,5-庚二烯的加成反应。该反应具有百分之百的区域选择性,在我们所选择的实验体系中只得到了3.5-加成物,而没有2.3-加成物。这一结果不同于典型的热诱导自由基加成反应[2]

关键词: 反应机理, ESR波谱, 降冰片二烯

Abstract: N,N,N’, N’-Tetramethylbenzidine Photosensitized addition reaction mechanism of poly-chloromethane and bicyclo [2,2,1]-2,5-heptadiene has been studied by ESR spcctrbscopy method. ESR spectra of ion radical pairs or solvent separated ion radical pairs, as the primary intermediates, have been detected. It is the direct evidence for the reaction mechanism.

Key words: Reaction mechanism, ESR Spectroscopy, Norbornadiene