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Photooxidation of Hantzsch 1,4-dihydropyridines by molecular oxygen 被引量:2

Photooxidation of Hantzsch 1,4-dihydropyridines by molecular oxygen
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摘要 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. Photooxidation of Hantzsch 1,4-dihydropyridines (1,4-DHP, 1a-1d) by direct irradiation (A 〉 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.
作者 TUNG ChenHo
出处 《Chinese Science Bulletin》 SCIE EI CAS 2010年第25期2855-2858,共4页
基金 supported by the National Natural Science Foundation of China (20732007,20972171,50973125) the Ministry of Science and Technology of China (G2007CB808004,2009CB2 20008),and the Bureau for Basic Research of the Chinese Academy of Sciences
关键词 光氧化反应 二氢 分子氧 超氧自由基 光化学氧化 氧气气氛 化学研究 电子转移 Hantzsch 1,4-dihydropyridines, molecular oxygen, photoinduced electron transfer, superoxide (O2-)
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