Table 3. Reaction of Cinnamaldehyde with Diphenylzinc in the Presence of the Chiral Ligandsa.

The reaction was carried out under nitrogen at room temperature in CH2Cl2 in the presence of 20 mol % of the chiral ligand and 40 mol % of ZnEt2. The concentration of aldehyde was 5 mM. The reaction was quenched in 5 h.