Journal of Organometallic Chemistry p. 103 - 114 (1989)
Update date:2022-08-30
Topics:
Trace, Rhonda
Jones, W. M.
Photolysis of dicarbonyl(ε5-cyclopentadienyl)(1-phenylcyclobutane-1-carbonyl)iron is proposed to give the hydride complex Ph(cyclobutenyl)Fe(Cp)(CO)H which dissociates to 1-phenylcyclobutene and FpH (Fp = ε5-cyclopentadienyldicarbonyliron).The FpH complex can oxidatively add to the sixteen electron acyl or ? complexes (Ph(cyclobutyl)-C(O)FeCp(CO) and Ph(cyclobutyl)FeCp(CO) respectively) to produce phenylcyclobutane and 1-phenylcyclobutane carboxaldehyde.Photolysis of dicarbonyl(ε5-cyclopentadienyl)(1-phenylcyclopropyl-1-carbonyl)iron gives a ? complex with no further reaction.Substitution of CO with PPh3 and thermolysis producrally substituted ?-allyl complex.In neither the cyclobutyl nor the cyclopropyl case did the reactions give isolable carbene complexes; apparently the phenyl substituent does not provide adequate stabilization of the carbene complex to allow its detection or isolation.
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