Fig. 1: Known strategies for Stevens rearrangements of tertiary amines and the progress of difluoromethyl ammonium salts.
From: Difluorocarbene-induced [1,2]- and [2,3]-Stevens rearrangement of tertiary amines
A Previous strategies of constructing ammonium ylides for [1,2]- or [2,3]-Stevens rearrangement. B Our hypothesis: could difluorocarbene enable Stevens rearrangement of tertiary amines? C Difluorocarbene-induced both [1,2]- and [2,3]-Stevens rearrangement via difluoromethyl ammonium ylides (this work).
