Technical Notes:
1.Catalyst used in the asymmetric addition of diethylzinc to aldehydes - synthesis of chiral alcohols.
2.Catalysts used in the asymmetric addition of acetylenes and silylacetylenes to aldehydes .
3.Catalyst used in the asymmetric addition of nitromethane to aldehydes - synthesis of ß-hydroxynitromethanes.
References: 1.Org. L ett., 2007, 9, 2965. 2.J. Am. Chem. Soc., 2006, 128, 1 0996. 3.Org. L ett., 2008, 10, 1831.