Rearrangements of ferrocenylcarbonium ions by a novel inter-cation exchange mechanism
Abstract
In CF3CO2H solution, α-substituted 2-ferrocenyl-2-propyl cations rearrange to a mixture of the isomeric β- and 1′-substituted cations in the presence of catalytic amounts of ferrocene or an alkylferrocene, by means of an equilibrium-controlled transfer of the (Me2C+) group between cations, ferrocene or an alkyl derivative functioning as transport agent.