Technical Notes:
1.Catalyst used for an asymmetric Michael addition.
2.Catalyst used for an asymmetric Michael addition of 1 ,3-dicarbonyls to enones .
3.Catalyst used for the asymmetric aza-Michael addition of methylhydroxylamine to chalcone derivatives.
4.Catalyst used for the asymmetric direct aldol reaction of acetophenone and pivaldehyde .