Technical Notes :
1.Ligands used for the Rh-c atalyzed asymmetric hydrogenation of functionalized alkenes .
2.Ligands used for the Ru-c atalyzed asymmetric hydrogenation of ß-ketoesters.
3.Ligands used for the Rh-catalyzed as ymmetric hydrogenation of a-ketoesters .
Reference: 1.Angew. Chem. Int. Ed., 2010, 49, 6873.