Melamine-formaldehyde resin supported H+ a mild and inexpensive reagent for synthesis of coumarins under mild conditions

Melamine formaldehyde resin supported H+ is used as an efficient catalyst in the Pechmann condensation reaction of phenols with beta-ketoesters, in solvent-free media leading to the formation of coumarin derivatives using conventional heating and microwave irradiation in excellent yields with good purity. (C) 2011 Ramin Rezaei. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.