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Beilstein J. Org. Chem. 2016, 12, 1551–1556, doi:10.3762/bjoc.12.149
Graphical Abstract
Figure 1: Structure of chiral bifunctional organocatalysts.
Figure 2: Proposed stereochemical model.
Scheme 1: Gram scale addition of ketimine 1a and diphenyl phosphonate (2).