1-[4-(bromomethyl)benzyl]-4-piperidin-1-ylpyridinium bromide 、
6,7-dimethoxy-2-pyridin-4-yl-1,2,3,4-tetrahydroisoquinoline 以
乙腈 、
丁酮 为溶剂,
反应 48.0h,
以75%的产率得到4-(6,7-dimethoxy-3,4-dihydroisoquinolin-2(1H)-yl)-1-{4-[(4-piperidin-1-ylpyridinium-1-yl)methyl]benzyl}pyridinium dibromide