125050-84-2Relevant academic research and scientific papers
Carbon-carbon bond formation at a dinuclear iron center. 4. Synthesis of [Fe2(CO)6(μ-C(OR)H)(μ-CR′=CR′H)]- anions (R = Me, Et; R′ = Ph, H) and the subsequent formation by protonation of the bridging vinylcarbene ligands >CHCR′=CR′H or >CR′CH=CR′H, depending on the reaction conditions
Yanez,Ros,Solans,Font-Altaba,Mathieu
, p. 543 - 547 (2008/10/08)
The reaction of Fe2(CO)6(μ-COR)(μ-CR′$UNKCR′H) (1a, R = Me, R′ = Ph; 1b, R = Et, R′ = Ph; 4, R = Et, R′ = H) complexes with [Na][BH4] (R = Me, Et; R′ = Ph) or [PPN][BH4] (R = Et; R′ = H) leads to the formation of the [Fe2(CO)6(μ-C(OR)H) (μ-CR′$UNKCR′H)]- anions 2a, 2b, and 5, in good yield. The X-ray structure has been determined where R = Et, R′ = Ph when associated with the [PPh4]+ cation. Crystals are triclinic, space group P1?. When R′ = Ph, protonation leads to the formation of Fe2(CO)6(μ-COEtCPhCPH) (6). In the presence of L = PPh3 or PMe2Ph, protonation gives Fe2-(CO)6L(μ-CPhCHCPhH) complexes 7 and 8. The latter result suggests that the intermediate formation of 1,3-diphenylcyclopropene arises from a [1 + 2] addition of the CH and CPhCPhH fragments.
