Table 3.
Diastereoselectivities and C–N:C–O ratios were measured by 1H NMR of the crude reaction mixtures; >20:1 dr and >20:1 C–N:C–O unless otherwise noted.
14: 9.8:1 dr; 20: 7:1 dr; 21: 12:1 dr.
16: 10:1 C–N:C–O; 17: 10:1 C–N:C–O
Diastereoselectivities and C–N:C–O ratios were measured by 1H NMR of the crude reaction mixtures; >20:1 dr and >20:1 C–N:C–O unless otherwise noted.
14: 9.8:1 dr; 20: 7:1 dr; 21: 12:1 dr.
16: 10:1 C–N:C–O; 17: 10:1 C–N:C–O