1,1'-[(1,4-dihydro-1,4-dioxo-2,3-naphthalenediyl)bis-(oxy-4,1-phenylene)]bis(5,6-dihydropyrimidine-2,4(1H,3H)-dione) 在
氢溴酸 、
溶剂黄146 作用下,
反应 1.5h,
以78%的产率得到1-[4-(1,4-dihydro-3-hydroxy-1,4-dioxonaphthalen-2-yloxy)-phenyl]-5,6-dihydropyrimidine-2,4(1H,3H)-dione