B. Chan et al., (+)-(2R,3S)-3-Bromo-2-chloro-N,N- diisopropyl-3-phenylpropanamide and (+)-(2R,3S)-3-bromo-2-chloro-N-(4-nitrophenyl)-3-phenylpropanamide, ACT CRYST C, 56, 2000, pp. E354-E355
The stereochemistries at positions 2 and 3 of the title compounds, C15H21Br
ClNO, (I), and C15H12BrClN2O3, (II), have been confirmed by X-ray structura
l analysis. The halogen atoms adopt an antiperiplanar arrangement in each c
ase.