Chiral unsymmetric diphosphine compounds and transition metal complexes containing them as ligands
申请人:Takasago International Corporation
公开号:EP0754696A1
公开(公告)日:1997-01-22
Novel chiral unsymmetric diphosphine compounds, represented by formula (I) :
wherein Ar1 and Ar2, which are different from each other, each represent a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a pyridyl group, a quinolyl group, an isoquinolyl group, a furfuryl group, a benzofurfuryl group, a thienyl group, or a benzothienyl group.
Transition metal complexes containing diphosphine compounds as ligands, where the complex catalyzes various asymmetric synthesis reactions, e.g., asymmetric hydrogenation or asymmetric hydrosilylation, exhibiting excellent performance in selectivity, conversion and catalytic activity, to provide a product of desired absolute configuration at high optical purity and in high yield.
由式 (I) 表示的新型手性不对称二膦化合物:
其中彼此不同的 Ar1 和 Ar2 分别代表取代或未取代的苯基、取代或未取代的萘基、吡啶基、喹啉基、异喹啉基、糠基、苯并呋喃基、噻吩基或苯并噻吩基。
含有作为配体的二膦化合物的过渡金属配合物,该配合物可催化各种不对称合成反应,例如不对称氢化或不对称水硅烷化,在选择性、转化率和催化活性方面表现出优异的性能,以高光学纯度和高产率提供所需绝对构型的产物。