Abstract
Tricarbonyl(η 5-4-triethylsilyl-1-methylpentadienyl)iron(+1) hexafluorophosphate was prepared by the protonation of γ- endo tricarbonyl (η 4-5-triethylsilyl-3,5-hexadien-2-ol)iron with hexafluorophosphoric acid. The cation reacts with H 2O, CH 3OH, NaBH 3CN, PPh 3, sodium dimethylmalonate and dimethyl cuprate in a regiospecific fashion by nucleophilic attack at C1. The regioselectivity for nucleophilic attack appears to be predominantly the result of steric control.
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