The Synthesis of 3,3-Difluoroallyl Derivatives of Silicon by an Organophosphorus Route.
MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF CHEMISTRY
Pagination or Media Count:
3,3-Difluoroallylderivatives of silicon have been prepared by the reaction of difluorochloromethane with ylides of type Ph3PCHCH2SiR3 SiR3 SiMe3, SiMe2H, SiMe2OSiMe3, SiMeOSiMe3. Also prepared by this procedure was Me3SiCH2C-2 CH3CF2, but Me3SiCH2cC6H5CF2 could not be prepared in this way, probably because the ylide, Ph3PCC6H5 CH2SiMe3 was not sufficiently basic to deprotonate HCF2C1. The thermal stability of Me3SiCH2CHCF2 was assessed and a few of its reactions examined additon of CCl2 and CBr2 generated via the appropriate PhHgCX2Br and addition-elimination reactions with phenyl- and n-butyllithium to give Me3SiCH2CHCRF R Ph, sub bar n-Bu. Author
- Organic Chemistry