Department of Chemistry, State University of New York at Stony Brook, Long Island, New York, 11794 U.S.A.
Abstract:
Although , (Fp η-C5H5Fe(CO)2) (I) is stable and characterizable, the lower homologue FpCH2CH(CO2CH3)2 (II) is not; this we attribute to a facile elimination reaction resulting from the relatively acidic β-hydrogen of II. Formation of I from Fp? and XCH2CE2CH3 (X Br, Cl; E CO2CH2CH3) and cleavage of its FeC bonds (using H+, Br2, CeIV and HgII) occur without major amounts of ester group migrations, even though ·CH2CE2CH3 radicals are involved in some of these reactions.
