Table 2.

¹H NMR (600 MHz, CDCl₃, 25 °C) nonequivalences (ΔΔδ, ppm) for the amide (NH), the chiral methine (CH) and the acetyl (Ac) protons of the racemic mixture of substrate 2 in the presence of the CSA (10 mM) in 1:1 and 1:2 CSA/2 mixtures. Enantioresolution quotients are reported in parenthesis.

CSA/Substrate	ΔΔδ (ppm)
	NH	CH	Ac
1:1	0.158 (1.6)	0.116 (1.0)	0.023 (3.5)
1:2	0.012 (0.1)	0.064 (0.5)	0.014 (2.1)