(2R)-2-amino-3-methoxy-N-methyl-N-[3-methyl-4-(3-oxo-morpholin-4-yl)-phenyl]-propionamide 在
O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 、
三乙胺 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 18.0h,
以9%的产率得到5-bromo-thiophene-2-carboxylic acid N-((1R)-2-methoxy-1-[methyl-{3-methyl-4-(3-oxo-morpholin-4yl)-phenyl}-carbamoyl]-ethyl)-amide