作者:Abbas Raja Naziruddin、Alexander Hepp、Tania Pape、F. Ekkehardt Hahn
DOI:10.1021/om200689r
日期:2011.11.14
ethylene-di(tBu)phosphine), and 8 (R = ethylenedicyclohexylphosphine) have been prepared. The benzimidazoles react with [RhCl(COE)2]2 in the presence of tertiary phosphines under formal tautomerization of the benzimidazole and chelating coordination of the resulting bidentate NH,NR-NHC/phosphine ligand (P∧C) to give complexes [RhCl(P∧C)PR3] [6]–[9]. Depending on the steric demand of the PR3, the phosphines of the
制备了N-烷基膦取代的苯并咪唑5(R =亚甲基二环己基膦),7(R =亚乙基二(t Bu)膦)和8(R =亚乙基二环己基膦)。苯并咪唑在叔膦的存在下,在苯并咪唑的正式互变异构化反应中与[RhCl(COE)2 ] 2反应,并与所生成的双齿NH,NR-NHC /膦配体(P∧C)螯合配位,生成配合物[RhCl( P ∧ C)PR 3 ] [ 6 ] - [ 9 ]。取决于PR 3的空间需求,P∧C配体的膦以及在连接苯并咪唑环氮原子与烷基膦的间隔基上,获得了具有顺式-P,P和反式-P,P几何形状的配合物,并进行了晶体学表征。