Synthesis of 2-amino-3-ethoxycarbonyl-4-aryl-4H,5H-pyrano-[3,2-c]benzopyran-5-one

摘要

A series of 2-amino-3-ethoxycarbonyl-4-aryl-4H,5H-pyrano-[3,2-c]benzopyran-5-ones have been were synthesised by the reaction of 4-hydroxycoumarin, an aromatic aldehyde and ethyl cyanoacetate under microwave irradiation with short times and high yields.