Technical Notes:

1. Ligand (enantiopure version) used to prepare a chiral zirconium catalyst useful in asymmetric Strecker and Mannich-typereactions.

2. Ligand (enantiopure version) used for titanium-catalyzed enantioselective Friedel-Crafts reactions.

References:

1.J. Am. Chem. Soc, 2000, 122, 762. 2. 2.J. Am. Chem. Soc., 1997, 119, 7153. 3.Angew. Chem. Int. Ed..1998, 37.979 4. J. Åm. Chem. soc., 1998, 120, 431.

5.Org- Chem., 2004, 69, 146.

6.Org. Lett.. 2008, 10, 2955.

7.Adv. Synth. Catal., 2009, 351. 2433.

8. Org.Lett..2009.11.4636

9. Org. Lett.. 2011, 13, 5944.