A stereocontrolled syntheses of conjugated dienyl trifluoromethyl ketones via the Claisen rearrangement of allyl 2-phenylsulfanyl-1-(trifluromethyl) vinyl ethers
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