Stereoselective Synthesis of Vinyl Triflones and Heteroaryl Triflones through Anionic O→C<sub>vinyl</sub>and N→C<sub>vinyl</sub>Trifluoromethanesulfonyl Migration Reactions
Six transformations, one pot: Various di‐ and trisubstituted vinyl triflones, as well as several heteroaryl triflones, were stereoselectively synthesized from easily accessible gem‐dibromovinyl substrates (see scheme, Boc=tert‐butoxycarbonyl). The highlights of this synthetic method lie in the remote O→Cvinyl or N→Cvinyl triflyl migrations and the one‐pot, three‐step protocol.