Enantioselective addition of diethylzinc to aromatic aldehydes with new chiral amino alcohols as ligands

Two new chiral amino alcohols were synthesized from ((+)-camphor),and their application to the enantioselective addition of diethylzinc to aldehydes was described.One of the ligands showed a good asymmetric induction in the catalysis of the reaction of benzaldehyde,and provides a yield of 85% and 73% e.e.