Cyclopentadienyl(pentamethylcyclopentadienyl)iron Derivatives. A New and Highly Selective Synthesis
作者:Gerhard E. Herberich、Andreas Gaffke、Hartmut J. Eckenrath
DOI:10.1021/om980708a
日期:1998.12.1
[Cp*Fe(AN)(3)]PF6 (5) (AN = MeCN) reacts with alkali metal cyclopentadienides M(C5H4R) (M = Li, Na; R = H, CHO, COMe, CH2NMe2) in, acetonitrile at ambient temperature to produce the corresponding (known) pentamethylferrocenes Cp*Fe(C5H4R) (1-4) in high yields. The potential ligand scrambling products Fe(C5H4R)(2) and FeCp*(2) are not formed. The new method should be widely applicable; the related syntheses of the boratabenzene complex Cp*Fe(C5H5BMe) and of the phosphaferrocene Cp*Fe(C4Me4P) are pertinent examples.