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由邻羟基苯乙酮合成３－二甲氨基－１－（２－羟基苯基）－１－丙烯酮，在与乙酸酐反应得３－乙酰苯并吡喃－４－酮。经元素分析，＇ＨＮＭＲ，ＭＳ等证实其分子结构。
Synthesis of 3-dimethylamino-1- (2-hydroxyphenyl) -1-propenone from o-hydroxyacetophenone and reaction with acetic anhydride gave 3-acetophenopyran-4-one. The elemental analysis, ’HNMR, MS confirmed its molecular structure.