chiral catalyst synthesis:
example:
references:
Org. Lett. 2007, 9, 3615.J. Chem. Soc., Chem. Commun. 2005, 1152.Org. Lett. 1999, 1, 419.J. Org. Chem. 1997, 62, 9223.Tetrahedron Lett. 1997, 38, 5616.