1.1
Reagents:
Phosphoric tribromide
Solvents:
Acetonitrile
;
6 h, 85 °C
1.2
Reagents:
Sodium bicarbonate
Solvents:
Water
;
neutralized
![6-溴-1H-吡唑并[3,4-b]吡啶结构式图片|934560-92-6结构式图片](http://hg.y866.cn/compound/lib/scimg/cas/150/934560-92-6.png?t=639019657479948638)
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