A study on the photochemistry of .ALPHA.,.BETA.-unsaturated .GAMMA.-lactones. III. Photodimerization of 2-penten-4-olide.
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概要
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Irradiation of 2-pentene-4-olide (I) with 254 nm light afforded three and dimers; two <I>head</I>-<I>to</I>-<I>tail</I> isomers and one <I>head</I>-<I>to</I>-<I>head</I> isomer. The photodimerization proceeds <I>via</I> the lowest triplet state. The quantum yields for the formation of the photodimers were determined as a function of the concentrations of I. Addition of I in the excited state to cyclopentene gave two isomeric cyclobutane derivatives. The photocycloaddition took place more rapidly than the photodimerization of I. The photodimerization was also quenched by anisole, probably through formation of an exciplex between I and anisole.
- 公益社団法人 日本化学会の論文
著者
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Matsuo Taku
Department Of Chemical Science And Technology Faculty Of Engineering Kyushu University
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Ohga Kazuya
Department Of Applied Chemistry Faculty Of Engineering Oita University
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Matsuo Taku
Departmnt of Organic Synthesis, Faculty of Engineering, Kyushu University
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Ohga Kazuya
Departmnt of Organic Synthesis, Faculty of Engineering, Kyushu University
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