A New Strategy for the Synthesis of 3‐Acyl‐coumarin Using Mesoporous Molecular Sieve MCM‐41 as a Novel and Efficient Catalyst

Abstract

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 mesoporous molecular sieve MCM‐41. 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 mesoporous molecular sieve MCM‐41.