Ring Expansion of Unsubstituted Aziridinium Ylide to Trifluoromethylated Dehydropiperidines

The first rhodium-catalyzed [3+3] ring expansion of unsubstituted aziridines was achieved using trifluoroalkenyl N-triftosylhydrazones as vinylcarbene precursors to afford a serie of structurally diverse 2-trifluoromethylated dehydropiperidines under mild conditions. DFT...