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化学学报
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化学学报 ›› 1989, Vol. 47 ›› Issue (4): 345-349. 上一篇    下一篇

研究论文

多氯甲烷与双环[2,2,1]-2,5-庚二烯光敏化离子自由基加成反应

杨海新;周亚琳;樊美公   

  1. 中国科学院感光化学研究所
  • 发布日期:1989-04-15

Photosensitized ionic radical addition reaction of polychloromethane and bicyclo(2,2,1)-2,5-heptadiene

YANG HAIXING;ZHOU YALIN;FAN MEIGONG   

  • Published:1989-04-15

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以芳胺为光敏剂, 研究了多氯甲烷与双环[2,2,1]-2,5-庚二烯离子自由基加成反应, 在所研究的体系中只得到3,5-加成物, 说明该反应具有高度的区域选择性. 结合多氯甲烷对光敏剂N, N, N', N'-四甲基联苯二胺光物理性质的影响, 提出了反应经过离子自由基复俣物中间体的反应机理.

关键词: 甲烷 P, 光敏化, 反应机理, 氯代烃, 自由基反应, 二环烃 P, 加成反应, 桥环化合物, 环庚二烯 P

Photosensitized ionic radical addition of bicyclo[2.2.1]-2,5-heptadiene with CHCl3 and CCl4 was investigated by using aromatic amines as the sensitizers. The reaction has very good regioselectivity. Only 3,5-addn. products such as I and II were obtained for CCl2 addition; with CHCl3, III was obtained. A mechanism involving ionic radical complex intermediate was proposed.

Key words: METHANE P, PHOTOSENSITIZATION, REACTION MECHANISM, CHLOROHYDROCARBON, FREE RADICAL REACTION, BICYCLIC HYDROCARBON P, ADDITION REACTION, BRIDGE COMPOUNDS, CYCLOHEPTADIENE P

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