SEARCH Articles Figures Tables Allylic oxonium ylides Oxonium Oxonium ylide -rearrangement Oxonium ylide -rearrangements transition states Oxonium ylide -shifts Oxonium ylide 1,2]-Stevens rearrangement Oxonium ylide approach Oxonium ylide formation Oxonium ylide mechanism Oxonium ylides Oxonium ylides Oxonium ylides Stevens -shift Oxonium ylides cyclic Oxonium ylides, formation Oxonium ylides, rearrangement Rearrangement, of: (cont oxonium ylides Sulfoxide, Ammonium, and Oxonium Ylide Rearrangements Ylide oxonium from carbenes