β-Acylvinyl-dicarbonyl-η 5 -cyclopentadienyl-eisen-Komplexe / β-Acylvinyl-dicarbonyl-η 5 -cyclopentadienyl-iron Complexes

Reactions of β-chlorovinylcarbonyl compounds 10, 14, 16, 18, 20, 22, with sodium dicarbonyl-η 5 -cyclopentadienyl-ferrate (NaFp) furnish β-acylvinyl-dicarbonyl-η 5 -cyclopentadienyliron complexes 15, 17, 19, 21, 23 and binuclear iron complexes 26-29. Spectral data demonstrate the donor effect of the Fp group. Irradiation of these complexes in the presence of triphenylphosphane delivers β-acylvinyl-carbonyl-η 5 -cyclopentadienyl-triphenylphosphane-iron complexes 34, 35. Reaction of glutarimides with oxalyl chloride gives rise to oxazolo-[3,2 a]pyridines 13. Benzylidenemalonyl chloride reacts with FpCS 2 Na to form benzylidenethietane-2,4-dione (32). A β-acylethinyl-carbonyl-η 5 -dicyclopentadienyl-iron complex 43 has been prepared.