Photoinduced Reactions. LXVIII. Photochemical Dehydrogenation of Imidazolines to Imidazoles
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概要
- 論文の詳細を見る
Imidazolines were found to be dehydrogenated to imidazoles by irradiation at 2537 Å or above 2900 Å in acetone. The n,π<SUP>*</SUP> triplet acetone acts as a hydrogen-abstracting agent giving 4- and/or 5-imidazolinyl radicals which in turn are transformed into imidazoles. This scheme is supported by the fact that the AIBN-initiated dehydrogenation of imidazolines gave corresponding imidazoles, that oxygen quenched the photochemical dehydrogenation, and that in some cases coupling products between the imidazolinyl and the acetone ketyl radicals were formed. Various data indicate that the imidazolinyl radical reverts to the parent imidazoline by hydrogen transfer from the acetone ketyl radical during the course of photolysis.
- 公益社団法人 日本化学会の論文
著者
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Matsuura Teruo
Department Of Materials Chemistry Faculty Of Science And Technology Ryukoku University
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Ito Yoshikatsu
Department Of Synthetic Chemistry & Biological Chemistry Graduate School Of Engineering Kyoto Un
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Saito Isao
Department Of Cardiovascular Disease Research Eisai Tsukuba Research Laboratories
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