Fluorocarbon derivatives of nitrogen. Part 18 [1]. Synthesis of fluorinated indolizines through reactions of pyridinium ethoxycarbonylmethylide or pyridinium phenacylide with perfluoropropene, perfluorobut-2-yne and 3,3,3-trifluoropropyne
作者:Ronald Eric Banks、Suad Najmaldin Khaffaff
DOI:10.1016/s0022-1139(00)80194-3
日期:1991.3
perfluoropropene, perfluorobut-2-yne, 3,3,3-trifluoropropyne and perfluorooctanenitrile respectively. Similarly, 2-fluoro-1-trifluoromethyl-3-phenacylindolizine (7), 1,2-bis(trifluoromethyl)-3-phenacylindolizine (9),and 3-phenacyl-1-trifluoromethylindolizine (11), have been obtained via reaction of pyridinium phenacylide with perfluoropropene, perfluorobut-2-yne, and 3,3,3-trifluoropropyne respectively. Alkaline
3-乙氧基羰基-2-氟-1-三氟甲基吲哚嗪(6),3-乙氧基羰基-1,2-(双三氟甲基)吲哚嗪(8),3-乙氧基羰基-1-三氟甲基吲哚嗪(10)和3-乙氧基羰基-2-全氟庚基咪唑[通过分别用全氟丙烯,全氟丁-2-炔,3,3,3-三氟丙炔和全氟辛腈捕集吡啶乙氧基羰基甲基化物获得1,2- α ]吡啶(12)。类似地,2-氟-1-三氟甲基-3-苯并吲哚嗪(7),1,2-双(三氟甲基)-3-苯并吗啉嗪(9)和3-苯甲酰基-1-三氟甲基吲哚并嗪(11),分别是通过吡啶吡啶鎓吡啶与全氟丙烯,全氟丁-2-炔和3,3,3-三氟丙炔的反应获得的。(8)的碱性水解得到1,2-双(三氟甲基)吲哚嗪-3-羧酸(16),将其热脱羧为1,2-双(三氟甲基)-吲哚嗪(15)。