SYNTHESE UND REAKTIVITAET DES DIPHENYLACETYLENIRIDIUM KOMPLEXES C5H5Ir(C2Ph2)PPri3 UND BILDUNG EINER ISOMEREN IRIDAINDEN-VERBINDUNG

Article abstract of DOI:10.1016/0022-328X(84)80446-5

trans-i)2> complexes are prepared from <(C8H14)2IrCl>2, PPr3ⁱ and C2R2 (R = H, Me, Ph) via the intermediate i)2>.With phenylacetylene, a mixture of two isomers, trans-i)2> and IrHCl(C2Ph)(PPr3ⁱ)2 is formed which reacts with pyridine to give IrHCl(C2Ph)(py)(PPr3ⁱ)2.Reaction of trans-i)2> with NaC5H5 yields the compound C5H5Ir(C2Ph2)PPr3ⁱ (VI) which is transformed via the vinyl complex C5H5Ir(CPh=CHPh)(OCOCF3)PPr3ⁱ (VII) into the iridaindene derivative IX.Using VII as the starting material, C5H5Ir(OCOCF3)2PPr3ⁱ, C5H5Ir(CPh=CHPh)(I)PPr3ⁱ and C5H5Ir(CPh=CHPh)(CH3)PPr3ⁱ are also obtained.Treatment of VI with Br2 and I2 respectively yields the complexes C5H5IrX2(PPr3ⁱ) (XII, X = Br; XIII, X = I), of which XIII reacts with CH3MgI to give C5H5Ir(CH3)2PPr3ⁱ.