Technical Notes:
1. L igand used to prepare a chiral zirconium catalyst useful in asymmetric Strecker reactions. Ligand used in the zinc-catalyzed enantioselective Hetero Diels-Alder reaction.
2.L igand used in asymmetric Friedel-Crafts reactions of pyrroles with glyoxylates .
References:
1.J. Am. Chem. Soc., 2000, 122, 762. 2.Org. L ett., 2002, 4, 4349.
3.Org. L ett., 2003, 5, 1091.
4.Org. L ett., 2011, 13, 5944.