<i>meta</i> -NTf ₂ substituted diaryliodonium salts: novel nitrogen-substituted aryne precursors for trapping reactions and rearrangements

We synthesized <i>meta</i>-NTf₂-substituted diaryliodonium salts as novel aryne precursors, the resulting aryne intermediates underwent efficient trapping reactions with various arynophiles, enabling the difunctionalization of the benzene ring. Furthermore, we developed a trifunctionalization reaction using <i>N</i>-allylanilines, which afforded highly functionalized diarylamines with an allyl group through a cascade involving both Fries and aza-Claisen rearrangements.