Abstract
EPZ-10 is a clay catalyst was found to be an efficient ecofriendly catalyst for the synthesis of coumarins by Von-Pechmann condensation which includes cyclocondensation of phenol with beta-ketoester under solvent free conditions by using microwave irradiation with excellent yield and good purity. The advantage of present methods is use of EPZ-10 as an ecofriendly biodegradable clay catalyst under solvent free condition with better yield in shorter reaction time.