This invention provides a novel diphosphine compound which is useful as a ligand of catalysts for asymmetric synthesis reactions, particularly asymmetric hydrogenation reaction. Particularly, it provides a diphosphine compound represented by a general formula (1) :
wherein R1 and R2 each independently represents a cycloalkyl group, an unsubstituted or substituted phenyl group or a five-membered aromatic heterocycle residue.
本发明提供了一种新型
二膦化合物,可用作不对称合成反应,特别是不对称氢化反应催化剂的
配体。特别是,本发明提供了一种由通式(1)表示的
二膦化合物:
其中 R1 和 R2 各自独立地代表环烷基、未取代或取代的苯基或五元芳香杂环残基。