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. Author manuscript; available in PMC: 2017 Oct 4.
Published in final edited form as: Angew Chem Int Ed Engl. 2016 Jun 22;55(41):12596–12624. doi: 10.1002/anie.201600547

Figure 4.

Figure 4

Chiral 4-aminopyridine catalyst–substrate complexes en route to alcohol acylation. Red dotted lines indicate cation–π interactions. Blue arrows indicate favorable trajectories for nucleophile approach.