Catalytic Carbon−Carbon and Carbon−Silicon Bond Activation and Functionalization by Nickel Complexes
作者:Brian L. Edelbach、Rene J. Lachicotte、William D. Jones
DOI:10.1021/om990457l
日期:1999.10.1
The nickel alkyne complexes (dippe)Ni(Me3SiC⋮CSiMe3), 1, (dippe)Ni(Me3CC⋮CSiMe3), 2, and (dippe)Ni(MeC⋮CSiMe3), 3, were synthesized (dippe = bis(diisopropylphosphino)ethane) and characterized by 1H, 31P, and 13C1H} NMR spectroscopy. Complex 1 was characterized by X-ray crystallography. Heating complex 1, 2, or 3 with excess biphenylene and alkyne results in the catalytic formation of several novel
合成了镍炔复合物(dippe)Ni(Me 3 SiC⋮CSiMe 3)1,(dippe)Ni(Me 3 CC⋮CSiMe 3)2和(dippe)Ni(MeC⋮CSiMe 3)3。 (dippe =双(二异丙基膦基)乙烷)并通过1 H,31 P和13 C 1 H} NMR光谱表征。配合物1通过X射线晶体学表征。加热复杂1,2,或3与过量的联苯和炔烃反应可催化形成几种新型有机化合物,其中一些已通过X射线晶体学表征。提出这些反应通过从乙炔插入中间体的β-甲硅烷基迁移与消除菲之间的竞争来进行。提出了针对这些反应的机制方案。