Chinese Science Bulletin

, Volume 55, Issue 25, pp 2855–2858 | Cite as

Photooxidation of Hantzsch 1,4-dihydropyridines by molecular oxygen

  • DengHui Wang
  • Qiang Liu
  • Bin Chen
  • LiPing Zhang
  • ChenHo Tung
  • LiZhu Wu
Article Organic Chemistry


Photooxidation of Hantzsch 1,4-dihydropyridines (1,4-DHP, 1a–1d) by direct irradiation (λ > 300 nm) under an oxygen atmosphere has been carefully examined in this work. Spectroscopic and electrochemical studies demonstrate that photoinduced singlet electron transfer from 1,4-DHP to molecular oxygen occurs. The generated superoxide radical anion (O2 −·) is responsible for this typical photochemical oxidation.


Hantzsch 1,4-dihydropyridines molecular oxygen photoinduced electron transfer superoxide (O2−·


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Copyright information

© Science China Press and Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • DengHui Wang
    • 1
  • Qiang Liu
    • 1
  • Bin Chen
    • 1
  • LiPing Zhang
    • 1
  • ChenHo Tung
    • 1
  • LiZhu Wu
    • 1
  1. 1.Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijingChina

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