Abstract
A simple, efficient, environment-friendly and high yielding procedure is developed for the Knoevenagel condensation and the combination of Knoevenagel/ Michael addition reaction of various 1, 3-dicarbonyls and aryl aldehydes in an aqueous surfactant medium. The reaction can be dramatically improved under microwave-irradiation.
Keywords: 4-hydroxy coumarin, barbituric acid, dimedone, Knoevenagel condensation, microwave-irradiation, surfactant medium, Diels-Alder reaction, anti-inflammatory activities, antioxidant, silica gel