Gammagammagamma-trifluorocarbonyl compounds are easily obtained in a good yield by introduction of the 1,1,1-trifluoroethyl moiety (CF3-CH2-) on the alpha-methylene group of a ketone.
Gammagammagamma-trifluorocarbonyl compounds are easily obtained in a good yield by introduction of the 1,1,1-trifluoroethyl moiety (CF3-CH2-) on the alpha-methylene group of a ketone.
Copper(I) Salt Catalyzed Reaction of 1,1,1-Trichloro-2,2,2-trifluoroethane with Trimethylsilyl Enol Ethers. A Convenient Synthesis of β-Chloro-β-(trifluoromethyl) α,β-Unsaturated Carbonyl Compounds
作者:Takashi Okano、Toru Uekawa、Shoji Eguchi
DOI:10.1246/bcsj.62.2575
日期:1989.8
β-Chloro-β-(trifluoromethyl) α,β-unsaturated carbonylcompounds were obtained by the reaction of trimethylsilyl enol ethers with CF3CCl3 and CuCl, followed by dehydrochlorination with triethylamine or DBN. Aromatic enol ethers gave moderate to good yields of the chloro(trifluoromethyl)methylene ketone derivatives but aliphatic enol ethers and silyl ketene acetal gave only lower yields.