A simple and efficient synthesis of coumarin derivatives through condensation reaction of substituted phenols and dicarbonyl compounds using PEG-SO 3 H as a recyclable catalyst under solvent-free conditions is described.
A clean and efficient one pot synthesis of 4H-pyran derivatives through condensation of aromatic aldehydes, malononitrile and dicarbonyl compounds under microwave irradiation in presence of Sodium acetate as a catalyst is described.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.