20348-09-8
2H-吡啶并[3,2-b][1,4]恶嗪-3(4H)-酮
→
~79%
122450-96-8
7-溴-2H-吡啶并[3,2-b][1,4]噁嗪-3(4H)-酮
16867-03-1
2-氨基-3-羟基吡啶