专利号:US-6399787-B1 优先权日:1997-06-13 标 题:Catalytic asymmetric hydrogenation, hydroformylation, and hydrovinylation via transition metal catalysts with phosphines and phosphites 发明人:ZHANG XUMU 权利人:PENN STATE RES FOUND 摘要:Novel transition metal catalysts with conformationally rigid chiral phosphines and phosphites are developed for asymmetric carbon-hydrogen and carbon-carbon bond formation. The invention emphasizes synthesis of chiral amines, beta-amino acids and related compounds via catalytic asymmetric hydrogenation based on chiral monodentate and bidentate phosphines with cyclic ring structures. The ligands contain rigid ring structures.