在哌啶和聚乙二醇-400的作用下,通过3-乙酰基-4-羟基香豆素与芳香醛的缩合反应,合成了3-肉桂酰基-4-羟基香豆素,接着在I2-DMSO氧化体系下,成功制备了一系列香豆素并[4,3-b]吡喃-4-酮衍生物.该反应操作简单、条件温和、收率良好.产物结构经NMR,IR,MS及元素分析数据得以证实. Under the action of piperidine and polyethylene glycol-400, 3-cinnamoyl-4-hydroxycoumarin was synthesized by the condensation reaction of 3-acetyl-4-hydroxycoumarin and aromatic aldehyde, A series of coumarinoxo [4,3-b] pyran-4-one derivatives were successfully prepared under the oxidative system of -DMSO. The reaction was simple and the conditions were mild.The yield of the product was confirmed by NMR, IR, MS and elemental analysis data were confirmed.