Some coumarin derivatives are synthesized through pechmann reaction with catalytical amount of sulfuric acid . microwave irradiation is used and moderate to excellent results are got . the method is also very fast and convenient 在催化量硫酸的存在下，用微波辐射进行pechmann反应，制备香豆素衍生物，获得中等至良好的产率。本方法快速方便。
