Technical Note:

1. Chiral ligand for the rhodium-catalyzed a symmetric hydrogenation of a-ß unsaturated substrates .

References:

1.J. Am. Chem. Soc., 2009, 131, 6683.

2.Angew. Chem. Int. Ed., 2008, 47, 31 80.

3.Patent W02009065856.