Synthesis and application of complexes of a novel chiral diphenylphosphino-functionalized N-heterocyclic carbene

被引:78
作者
Bappert, E [1 ]
Helmchen, G [1 ]
机构
[1] Heidelberg Univ, Inst Organ Chem, D-69120 Heidelberg, Germany
关键词
asymmetric catalysis; chiral N-heterocyclic carbenes; chiral P ligands; rhodium; enantioselective hydrogenation;
D O I
10.1055/s-2004-829548
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Complexes of the ligand (S,S)-1-(2-diphenylphosphanyl-naphtalen-1-yl)-3-(2-isopropyl-phenyl)-4,5-diphenyl-imidazolin-2-ylidene, a representative of a new class of chiral ligands, were obtained via a short route starting from (S,S)-1,2-diphenyl-ethylen-1,2-diamine; a Rh-complex was found to promote catalytic hydrogenation of a,p unsaturated esters with up to 99% ee.
引用
收藏
页码:1789 / 1793
页数:5
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