Reaction of 1-hydrohexafluoroisobutenyloxytrimethylsilane with fluoride ion sources. 2,2,2’,2’-Tetrakis(trifluoromethyl)divinyl ether
作者:A. Yu. Volkonskii、E. M. Kagramanova、E. I. Mysov、N. E. Mysova
DOI:10.1007/s11172-005-0189-4
日期:2004.12
1-hydrohexafluoroisobutenolate anion (3), which is silylated with trialkylchlorosilanes at the oxygen atom. In the presence of bis(trifluoromethyl)ketene N,N,O-trimethylaminoacetal or N-(α,α-difluoroalkyl)-dialkylamines, silane 2a is transformed into 2,2,2’,2’-tetrakis(trifluoromethyl)divinyl ether. The reaction of trifluoroacetic anhydride with N-(1,1,2,2-tetrafluoroethyl)diethylamine affords trifluoroacetyl
1-氢六氟异丁烯氧基三甲基硅烷 (2a) 与二甘醇二甲醚中的氟化铯反应导致三甲基氟硅烷的消除形成 1-氢六氟异丁烯酸阴离子 (3),该阴离子在氧原子上被三烷基氯硅烷甲硅烷基化。在双(三氟甲基)乙烯酮N,N,O-三甲基氨基缩醛或N-(α,α-二氟烷基)-二烷基胺存在下,硅烷2a转化为2,2,2',2'-四(三氟甲基)二乙烯基醚. 三氟乙酸酐与 N-(1,1,2,2-四氟乙基)二乙胺反应以定量收率提供三氟乙酰氟。