(2R)-2-amino-3-methoxy-2-methyl-propionic acid N-[3-methyl-4-(3-oxo-morpholin-4-yl)phenyl]-amide 在
N-甲基吗啉 、 O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 18.0h,
以31%的产率得到5-bromo-thiophene-2-carboxylic acid N-{(1R)-2-methoxy-1-methyl-[3-methyl-4-(3-oxo-morpholin-4-yl)phenylcarbamoyl]-ethyl}-amide