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Scope of Protecting Group at the N1-Position and Other N-Substituted Ketimines
The reactions were carried out with 1 (0.2 mmol), 2a (0.24 mmol), Bi(OAc)3 (1 mol%), and (S)-5a (2 mol%) in 1.0 mL Et2O at room temperature. Isolated yields. The er values were determined by HPLC analysis.
The er in bracket was afforded after recrystallization from ethyl acetate/n-pentane.
