Stevens Rearrangement ·
[1,2]-Ylide Shift
un
seel
.com · N⁺ ylide → caged radical pair → N→C migration
N center
R₄N⁺
Migration
0
Stage
quaternary ammonium salt
Nitrogen (N)
Methyl groups (CH₃)
Benzyl — migrating group
α-carbon / carbanion
Radical (•) / new C-C bond
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.com · Stevens Rearrangement