5-(3,4-dihydroxyphenyl)-2-phenyl-4(3H)-pyrimidinone hydrobromide 、
乙酸酐 、
乙醚 在
乙醚 作用下,
以
吡啶 为溶剂,
反应 1.5h,
以There are obtained 7.1 g of 4-(3,4-dihydro-4-oxo-2-phenyl-5-pyrimidinyl)-o-phenylene diacetate as white crystals of m.p. 240° C.的产率得到4-(3,4-dihydro-4-oxo-2-phenyl-5-pyrimidinyl)-o-phenylene diacetate