The generation of gem-difluoroallyllithium by the transmetalation reaction
作者:Dietmar Seyferth、Karl R. Wursthorn
DOI:10.1016/s0022-328x(00)83532-9
日期:1977.9
3,3-Difluoroallyltrimethyltin was prepared by reaction of chlorodifluoromethane with the ylide reagent Ph3PCHCH2SnMe3 gem-Difluoroallyllithium, which was generated by the reaction of n-butyllithium with 3,3-difluoroallyltrimethyltin in THF at −95°, was of very limited stability at that temperature. However, in situ procedures and alternate incremental addition procedures allowed its application in