The relative migration tendencies of p-substituted phenyl groups in carbonium ion doubly-degenerate rearrangements
Abstract
The order of the migration tendencies of p-X-phenyl groups in the doubly-degenerate rearrangement of stable 9-p-X-phenyl-9,10-dimethylphenanthrenonium ions (Ia—e) is X = Me > F ∼ H > Cl > CF3.