An efficient and enantioselective Michael addition of aromatic oximes to α , β ‐unsaturated aldehydes promoted by a chiral diamine catalyst derived from α , α ‐diphenyl prolinol

Chiral diamine catalysts 11a–e derived from α , α ‐diphenyl prolinol were prepared and successfully applied to the Michael addition of aromatic oximes to α , β ‐unsaturated aldehydes in mediocre to good yields (up to 78%) and good to high enantioselectivities (up to 93% ee ).