| 摘要 |
Polyfluoroenolates, R1CX=CR2OM (R1 is F or a perfluoroalkyl group, R2 is a perfluoroalkyl group, X is F, Cl or Br), are easily formed at good yields by dehydrohalogenation reaction of polyfluoroalcoholates, R1CXY-CR2HOM (Y is F, Cl or Br), with a strong base such as, e.g., an alkyl metal or an aryl metal. A typical example of the polyfluoroenolates is lithium pentafluoro-2-propenolate which is obtained from hexafluoro-2-propanolate. A polyfluoroenolate of the above general formula can be converted into another polyfluoroenolate having an alkyl or aryl group in place of the halogen X by reaction with an alkyl or aryl metal. |
