Preparation of Perfluoroalkylated Benzoheterocyclic Compounds Using Hexafluoro-1,2-epoxypropane
作者:Nobuo Ishikawa、Shigekuni Sasaki
DOI:10.1246/bcsj.50.2164
日期:1977.8
containing CF3 and C2F5 were prepared as follows: (1) 2-(pentafluoroethyl)benzoxazoles by treating 2-aminophenols with HFPO/Et3N, followed by dehydrating cyclization, (2) 3-(trifluoromethyl)2H-1,4-benzoxazin-2-ones, 3-(trifluoromethyl)-2(1H)-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)-4H-3
利用六氟-1,2-环氧丙烷(HFPO,六氟环氧丙烷)的高反应活性,制备了几种含有CF3和C2F5的新型苯并杂环化合物如下:(1)用HFPO/Et3N处理2-氨基苯酚得到2-(五氟乙基)苯并恶唑,然后脱水环化,(2) 3-(三氟甲基)2H-1,4-苯并恶嗪-2-酮、3-(三氟甲基)-2(1H)-喹喔啉酮和2-氟-2-(三氟甲基)-2 ,3-dihydro-1,4-benzothiazin-3-one 通过 ortho-bifunctional 苯与 HFPO 反应,和 (3) 2-(pentafluoroethyl)-4H-3,1-benzoxazin-4-one 通过处理邻氨基苯甲酸HFPO/Et3N。