Alkynes and Diynes as Precursors for Organoiridium Complexes Containing Iridium−Carbon Single and Double Bonds<sup>,</sup><sup>1</sup>
作者:Helmut Werner、Raimund W. Lass、Olaf Gevert、Justin Wolf
DOI:10.1021/om9703393
日期:1997.9.1
[IrHCl(E)-CHCHPh}(CO)(PiPr3)2] (25) was isolated for R = H and R‘ = Ph. Treatment of 15 with HC⋮CCPh2OH afforded, via [IrHCl(C⋮CCPh2OH)(PiPr3)2] (27) or the isomer trans-[IrCl(CCHCPh2OH)(PiPr3)2] (28), the allenylideneiridium(I) compound trans-[IrCl(CCCPh2)(PiPr3)2] (29) in excellent yield. Hydrogenation of 29 gave the allene complex trans-[IrCl(η2-CH2CCPh2)(PiPr3)2] (30), the structure of which was determined
发现原位产生的物质[IrCl(C 8 H 14)(P i Pr 3)2 ]以及二氢配合物[IrH 2 Cl(P i Pr 3)2 ](15)对炔烃具有很强的反应性。在C⋮C和C⋮CC⋮C单元上带有H或SiMe 3取代基的二炔。[IrCl(C 8 H 14)(P i Pr 3)2 ]与Me 3 SiC⋮CR(R = Ph,Me,n Bu,SiMe 3,CH的热或光化学反应2 OH,CME 2 OSiMe 3,CO 2 ET)导致的反式- [的IrCl Ç C(森达3)R}(P我镨3)2 ](3 - 9)对于R = CO 2通过隔离π的Et -alkyne金属中间体的反式- [的IrCl(η 2 -Me 3的SiC⋮CR)(P我镨3)2 ](2),光解15在我的存在3的SiC⋮CC⋮CSiMe 3,得到的反式-[IrCl C C(SiMe 3)C⋮CSiMe 3 }(P i Pr 3)2