The regio- and stereoselective addition of carbon nucleophiles to trifluoromethyl phenylsulfanyl acetylene: a novel and expeditious approach to 3-trifluoromethyl furans
作者:Biao Jiang、Fangjiang Zhang、Wennan Xiong
DOI:10.1016/s0040-4039(01)02230-4
日期:2002.1
A convenient generation of trifluoromethyl phenylsulfanyl acetylene was realized from 2-bromo-1-phenylsulfanyl-3,3,3-trifluoropropene. The reagent was reacted with carbanions to give (1E,3E)-2-trifluoromethylbutadienyl phenyl sulfides regio- and stereoselectively, which underwent intramolecular cyclization in decalin at 190°C or in acetic acid with 1,4-benzoquinone and sodium acetate to afford 3-t
由2-溴-1-苯基硫烷基-3,3,3-三氟丙烯实现了三氟甲基苯基硫烷基乙炔的方便生成。该试剂与碳负离子反应生成区域选择性和立体选择性的(1 E,3 E)-2-三氟甲基丁二烯基苯基硫醚,它们在萘烷中于190°C或在乙酸中与1,4-苯醌和乙酸钠一起进行分子内环化反应。以高收率得到3-三氟甲基取代的呋喃。