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Reactivity of diiron hexacarbonyl complexes with monophosphine ligands
Reactions of complex (mu-SCH2CH2S-mu)Fe2(CO)6(D) with tris(4-fluorophenyl)phosphine or 2-(diphenylphosphino)benzaldehyde in the presence of Me3NO¡¤2H2O afforded complexes (mu-SCH2CH2S-mu)Fe2(CO)5[P(4-C6H4F)3] (1) and (mu-SCH2CH2S-mu)Fe2(CO)5[Ph2P(2-C6H4CHO)] (2) in 84 and 88% yields, respectively, whereas complexes [mu-SCH(CH3)CH(CH3)S-mu]Fe2(CO)5[P(4-C6H4CH3)3] (3) and [mu-SCH(CH3)CH(CH3)S-mu]Fe2(CO)5[P(2-C4H3O)3] (4) were obtained by the reactions of complex [mu-SCH(CH3)CH(CH3)S-mu]Fe2(CO)6(E) with tris(4-methylphenyl)phosphine or tris(2-furyl)phosphine in 64 and 65% yields, respectively. The new complexes 1?4 were structurally characterized by elemental analysis, spectroscopy, and single crystal X-ray diffraction analysis.
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Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate