The stereoselective preparation of cis and trans-1,2-difluoroethylene synthons

Article abstract of DOI:10.1016/0040-4020(95)00861-2

Isomerization of (Z)-HFC = CFSiEt₃ with ultraviolet light and catalytic phenyl disulfide has resulted in a high yield, stereoselective preparation of cis-1,2-difluorotriethylsilylethylene, (E)-HFC = CFSiEt₃, (E)-HFC = CFSiEt₃ has been converted to (Z)-F(Bu₃Sn)C = CFSiEt₃, (Z)-IFC = CFSiEt₃, (Z)-BrFC = CFSiEt₃, (Z)-Me₃SiFC = CFSiEt₃, and (Z)-IFC = CFI, (E)-IFC = CFI has been prepared from (Z)-HFC = CFSiEt₃.