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Photoreduction of polyhalogenated anthraquinones by direct electron transfer from alcohol

✍ Scribed by Haruo Inoue; Kenji Ikeda; Hayao Mihara; Mitsuhiko Hida

Publisher
Elsevier Science
Year
1983
Tongue
English
Weight
537 KB
Volume
95
Category
Article
ISSN
0009-2614

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✦ Synopsis

I'olyhalo~ena~cd anthraquinoncs such as pernuoroanthraquinone. 1,2,3,4-tctrafluoroanthraquinone, and 1,2,3,4-tetmcllioro;l~lrllraquinonc xc photorcduced in ethanol via direct electron transfer from ethanol. A dramatic switch-over from Il>*drogen-atom abstraction to electron transfer is induced by mhin_g of m with nn* states in their T1 state and the enh;lnccd rlccrron-accepting character of polyhalogznated anthraquinones.

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Directive Effects of Substituents on the
Directive Effects of Substituents on the Electron Transfer Photoreduction of N-Methylphthalimide by 2,3-Dimethyl-2-butene
✍ Paul H. Mazzocchi; Frederich Khachik πŸ“‚ Article πŸ“… 1983 πŸ› Elsevier Science 🌐 French βš– 163 KB

Irradiation of a series of aryl substituted phthalimides in the presence of 2,3dimethyl-2-butene results in a single regiochemical photoreduction product for each substituent. The results are consistent with substituent stabilization effects on the intermediate phthalimide radical anion.