Preparation of perfluoroalkylated benzoheterocyclic compounds using hexafluoro-1,2-epoxypropane.
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概要
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Utilizing the high reactivity of hexafluoro-1,2-epoxypropane (HFPO, hexafluoropropylene oxide), several new benzoheterocyclic compounds containing CF<SUB>3</SUB> and C<SUB>2</SUB>F<SUB>5</SUB> were prepared as follows: (1) 2-(pentafluoroethyl)benzoxazoles by treating 2-aminophenols with HFPO/Et<SUB>3</SUB>N, followed by dehydrating cyclization, (2) 3-(trifluoromethyl)2<I>H</I>-1,4-benzoxazin-2-ones, 3-(trifluoromethyl)-2(1<I>H</I>)-quinoxalinone and 2-fluoro-2-(trifluoromethyl)-2,3-dihydro-1,4-benzothiazin-3-one by reactions of ortho-bifunctional benzenes with HFPO, and (3) 2-(pentafluoroethyl)-4<I>H</I>-3,1-benzoxazin-4-one by treating anthranilic acid with HFPO/Et<SUB>3</SUB>N.
- 公益社団法人 日本化学会の論文
著者
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Ishikawa Nobuo
Department of Chemical Engineering, Tokyo Institute of Technology
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Sasaki Shigekuni
Department of Chemical Technology, Tokyo Institute of Technology
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