(2RS)-bromo-N-[(RS)-1-(5-bromo-2-fluoro-phenyl)-2-hydroxy-1-methyl-ethyl]-3-phenyl-propionamide 、
potassium tert-butylate 、 (2R,5S)-2-benzyl-5-(5-bromo-2-fluoro-phenyl)-5-methyl-morpholin-3-one 、 (2S,5R)-2-benzyl-5-(5-bromo-2-fluoro-phenyl)-5-methyl-morpholin-3-one 以yielded besides the N—[(RS)-1-(5-bromo-2-fluoro-phenyl)-2-hydroxy-1-methyl-ethyl]-3-phenyl-acrylamide (0.381 g, 30% of theory), (2R,5S)-2-benzyl-5-(5-bromo-2-fluoro-phenyl)-5-methyl-morpholin-3-one and (2S,5R)-2-benzyl-5-(5-bromo-2-fluoro-phenyl)-5-methyl-morpholin-3-one as the dominant diastereoisomer in form of a white foam (51% of theory)的产率得到N-[(RS)-1-(5-bromo-2-fluoro-phenyl)-2-hydroxy-1-methyl-ethyl]-3-phenyl-acrylamide