The present invention provides a novel diphosphine compound of the formula (I):
where R1 and R2 represent independently cycloalkyl, unsubstituted or substituted phenyl, or five-membered heteroaromatic ring. The compound is useful as a ligand for an asymmetric reaction, in particular, asymmetric hydrogenation catalyst.
本发明提供了一种新型的式 (I)
二膦化合物:
其中 R1 和 R2 独立地代表环烷基、未取代或取代苯基或五元杂芳环。该化合物可用作不对称反应的
配体,特别是不对称氢化催化剂。