Silica Supported Tungstosilicic Acid as an Efficient and Reusable Catalyst for the One-Pot Synthesis of β-Acetamido Ketones via a Four-Component Condensation Reaction
Silicasupported tungstosilicic acid has been used as an effective catalyst for a modified Dakin-West one-pot, four- component condensation of an aryl aldehyde, an aryl ketone, acetyl chloride and acetonitrile for the synthesis of β-acet-amido ketones. This catalytic system can act as an active, inexpensive, recoverable and recyclable catalyst. Some advantages of this system are short reaction times