A TRIMETHYLSILYL GROUP MIGRATION IN THE CHEMISTRY OF η5-C5H5Fe(CO)2SiMe3

Article abstract of DOI:10.1016/S0022-328X(00)89048-8

Reaction of η⁵-C5H5Fe(CO)2SiMe3 with either n-BuLi or lithium diisopropylamide (LDA) results in a migration of the trimethylsilyl group from iron to the complexed Cp ligand.The resulting η⁵-C5H4SiMe3Fe(CO)2 anion is redily alkylated to give ?-bonded derivatives.The unique reactivity of the trimethylsilyl system is underscored by comparison with the behavior of η⁵-C5H4Fe(CO)2Me under identical conditions.Some chemical transformations of η⁵-C5H4SiMe3Fe(CO)2R derivatives involving migratory insertion and β-hydride abstraction are also reported.