Fig. 5: Kinetic studies.

a Kinetic analysis of (rac)-1a with p-methylaniline. b Kinetic analysis of (rac)-1a with phenylethylamine. c Reactions with a matched or mismatched ligand. d Kinetic analysis of (R)-1a with p-methylaniline. e Kinetic analysis of (R)-1a with phenylethylamine. f Investigations into the racemization process of (R)-1a under different conditions.