Reactivity of (1-methoxycarbonylpentadienyl)iron(1+) cations with hydride, methyl, and nitrogen nucleophiles.

The reaction of tricarbonyl and (dicarbonyl)triphenylphosphine (1-methoxycarbonyl-pentadientyl)iron(1+) cations and with methyl lithium, NaBHCN, or potassium phthalimide affords (pentenediyl)iron complexes and , while reaction with dimethylcuprate, gave (,-diene)iron complexes and . Oxidatively induced-reductive elimination of gave vinylcyclopropanecarboxylates . The optically active vinylcyclopropane (+)-, prepared from (1)-, undergoes olefin cross-metathesis with excess (+)- to yield (+)-, a C9-C16 synthon for the antifungal agent ambruticin. Alternatively reaction of with methanesulfonamide or trimethylsilylazide gave (,-diene)iron complexes and . Huisgen [3+2] cyclization of the (azidodienyl)iron complex with alkynes afforded triazoles .