4-bromo-1-oxido-2-pyridin-2-ylpyridin-1-ium

4-溴-2,2’-联吡啶

2-pyridin-2-ylpyridin-4-amine

(2-pyridin-2-ylpyridin-4-yl)boronic acid

6-碘-4-甲氧基-2,2'-联吡啶