The synthesis of some α, β-unsaturated ketones from derivatives of axetyl cumarines

Abstract

The reaction of 2,4-dihydroxyacetophenone with ethyl acetoacetate to give 6-acetyl-5-(or 7-) hydroxy-4-methyl coumarines or 3-acetyl-7-hydroxy-4-methyl coumarine. By condensation of 6-acetyl coumarines with aromatic aldehydes have been obtained α/β-unsaturated ketones. But by analogons reaction of 3-acetyl-7-hydroxy-4-methyl coumarine with aromatic aldehydes have been prepared products of condensation in 3-acetyl group and in 4-methyl group. Structure of these products has been determined by IR. ^lH-NMR and MS spectrocopies. Antimicrobial and antifungal activities ofthese compounds have been investigated.