Photocarboxylation of naphthalene in the presence of carbon dioxide and an electron donor.
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概要
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Naphthalene was carboxylated to naphthoic acids by the irradiation of naphthalene and a donor in the presence of carbon dioxide. The UV irradiation through Pyrex caused reactions of naphthalene, itself, giving a naphthalene dimer etc. Such undesirable reactions were partly depressed by using a CuSO<SUB>4</SUB> filter solution; the selectivities of naphthoic acids and dihydronaphthalenecarboxylic acid increased from 2.2–9.8 to 12.2–23.0%. To avoid any direct irradiation to naphthalene and naphthoic acids was critical. Their high selectivities, up to 67%, were obtained upon visible light irradiation by using phenazine as a sensitizer. More than 90% of the naphthoic acids was 1-naphthoic acid, which was confirmed by GC and ms.
- 公益社団法人 日本化学会の論文
著者
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Onuki Masatoshi
Department Of Applied Chemistry Faculty Of Engineering
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KARASU Masa
Department of Materials Science and Engineering, Faculty of Engineering, Yamagata University
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Tagaya Hideyuki
Department Of Applied Chemistry Faculty Of Engineering
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Chiba Koji
Department of Applied Chemistry, Faculty of Engineering, Yamagata University
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Tomioka Yoshiki
Department of Materials Science and Engineering, Faculty of Engineering, Yamagata University
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Wada Yoshinori
Department of Materials Science and Engineering, Faculty of Engineering, Yamagata University
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Tagaya Hideyuki
Department of Materials Science and Engineering, Faculty of Engineering, Yamagata University
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Chiba Koji
Department of Apblied Chemistry, Faculty of Engineering, Yamagata University
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