Poly(4-vinylpyridine)-Supported Dual Acidic Ionic Liquid: A Novel Heterogeneous Catalyst for the Synthesis of ?-Acetamido Ketones

摘要

Asupported dual acidic ionic liquid catalystwas easily prepared from its startingmaterials and used as an environmentally friendly heterogeneous catalytic system for the synthesis of β-acetamido ketones from the four-component condensation of an aromatic aldehyde with acetophenone, acetyl chloride, and acetonitrile at room temperature. This catalyst was also applied as an efficient catalyst for the synthesis of α-aminophosphonates. The catalyst favorably combines the properties of ionic liquids and advantages of solid supports and is recoverable without loss in its catalytic activity.