7-bromo-3(R,S)-tert-butoxycarbonyl-1-ethyl-8-methoxy-2,3,4,5-tetrahydro-1H-1-benzazepine-2-one 、
溴 以
甲醇 为溶剂,
以resulted in a formation of 7-bromo-3(R,S)-methoxycarbonyl-1-ethyl-8-methoxy-2,3,4,5-tetrahydro-1H-1-benzazepine-2-one的产率得到7-bromo-1-ethyl-3(R,S)-methoxycarbonyl-8-methoxy-2,3,4,5-tetrahydro-1H-1-benzazepine-2-one