Constructing a quantitative correlation between N-substituent sizes of chiral ligands and enantioselectivities in asymmetric addition reactions of diethylzinc with benzaldehyde.

Using the asymmetric addition reaction of diethylzinc with benzylaldehyde as a model, we have demonstrated that excellent correlations exist between steric reference parameters (Charton and Sterimol values) for appropriate sets of substituents present on chiral 1,2-amino-phosphoramide ligands and the enantiomeric ratios of alcohol products produced in this process.

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