A photochemically induced novel ring enlargement reaction. Reaction of cation radical derived from 7,8-bis(methoxycarbonyl)-9-(4-methoxyphenyl)-1-phenyl-3,4-benzo-9-azabicyclo(4.2.1)non-3-ene-2,5-dione.
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概要
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By oxidation with molecular oxygen, photoadducts <B>2</B> of 1-(4-methoxyphenyl)-1a-phenyl-1a,7a-dihydro-1<I>H</I>-naphth[2,3-<I>b</I>]azirine-2,7-dione with olefins afforded cation radicals of <B>2</B> in acidic media such as CF<SUB>3</SUB>CO<SUB>2</SUB>H or HClO<SUB>4</SUB>. On irradiation, the cation radicals gave ring enlarged isomers 10,11-bis(methoxycarbonyl)-1-phenyl-3,4-benzo-7,8-(3′-methoxybenzo)-9-azabicyclo[4.3.2] undec-3,7-diene-2,5-dione (<B>3</B>).
- 公益社団法人 日本化学会の論文
著者
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Maruyama Kazuhiro
Department Of Chemistry Faculty Of Science Kyoto University
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Ogawa Takuji
Department Of Chemistry Faculty Of Science Ehime University
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