A novel and efficient one-pot cascade synthesis of 2H-1,4-benzoxazin-3-(4H)-ones has been developed through copper-catalyzed coupling of o-halophenols and 2-halo-amides. Various 2H-1,4-benzoxazin-3-(4H)-ones with diversity at three substituents on their scaffold have been synthesized conveniently in good to excellent yields.
通过邻卤代
酚和 2-卤代
酰胺的
铜催化偶联,开发了一种新型高效的 2H-1,4-
苯并恶嗪-3-(4H)-
酮的一锅级联合成方法。支架上三个取代基具有多样性的各种2H-1,4-
苯并恶嗪-3-(4H)-
酮已被方便地合成,产率良好至优异。