Technical Notes:
1.Catalyst used for the asymmetriccyano-ethoxycarbonylation reaction of aldehydes.
2. Catalyst used for the efficient, two-step conversion of a, ß-unsaturated aldehydes to optically active y-oxy-a,ß-unsaturated nitriles .
3. Catalyst used for the asymmetric 1 ,4-addition of O-alkylhydroxyamine to enones.
References：
1.J.AM .Chem. Soc.，2005，127，3413
2.Org.Lett.，2003，5，3021.
3.J.Am.Chem.Soc.,2003,125,16176
Strem
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