Highly Regioselective Hydroaminomethylation of Terminal Olefins to Linear Amines Using Rh Complexes with a Tetrabi Phosphorus Ligand
作者:Guodu Liu、Kexuan Huang、Chaoxian Cai、Bonan Cao、Mingxin Chang、Wenjun Wu、Xumu Zhang
DOI:10.1002/chem.201103073
日期:2011.12.16
A highly regioselective hydroaminomethylation of terminal olefins catalyzed by Rh complexes with 2, 2′, 6, 6′‐tetrakis ((diphenylphosphino)methyl)‐1, 1′‐biphenyl (Tetrabi) ligand has been developed. Up to 99 % amine selectivity, 168 linear/branched amine product ratio (n/i), and 97.4 % linear amine yield has been obtained at a substrate/rhodium precursor ratio (S/Rh) of 1000 with this methodology.
已经开发了具有2、2',6、6'-四((二苯基膦基)甲基)-1,1'-联苯(Tetrabi)配体的Rh配合物催化的末端烯烃的高度区域选择性氢氨基甲基化。使用该方法,在底物/铑前体比率(S / Rh)为1000的情况下,可获得高达99%的胺选择性,168个线性/支链胺产物比率(n / i)和97.4%线性胺产率。在10000 S / Rh的比率下,周转次数达到6930,n / i可以达到> 525。几种不同的烯烃和仲胺以高的化学选择性(99%),收率(> 98%)和区域选择性(> 120)成功应用。