25165-70-2
5-[[(5-bromopyridin-2-yl)amino]methylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione
→
~76%
23536-76-7
7-溴-吡啶并[1,2-a]嘧啶-4-酮
1072-97-5
2-氨基-5-溴吡啶