Addition of trifluoromethanethio- and trifluoromethaneseleno-sulfonates to olefins. Synthesis of vinyl triflones

Article abstract of DOI:10.1016/S0040-4020(99)00421-4

Trifluoromethanethio- and trifluoromethaneselenosulfonates are strong electrophilic reagents which add rapidly to olefins to deliver β-sulfenyl and β-selenyl triflones. These products are converted in high yields to vinyl triflones by different techniques