Nano-SnO2 as a novel and efficient catalyst for the synthesis of 3-acyl-coumarin derivatives

Bita Baghernejad

Abstract

3-Acyl-coumarins were obtained in high yields from ortho-hydroxybenzaldehydes and ethyl acetoacetate or ethyl benzoylacetate in acetonitrile in the presence of a catalytic amount of nano-SnO2