Title: Highly Efficient Synthesis of β-Amino Ketones via Direct Mannich-type Reaction Catalyzed by Acidic Ionic Liquid
Volume: 8
Issue: 6
Author(s): Dong-Nuan Zhang, Ji-Tai Li, Ya-Li Song and Guo-Feng Chen
Affiliation:
Keywords:
Mannich-type reaction, β-amino ketones, synthsis, ionic liquid, catalysis, cyclohexanone, polystyrene-supported, acetophenone, non-inflammability, dodecylbenzenesulfonic
Abstract: [MPSIm]+CF3COO- ionic liquid is an efficient green catalyst for the one-pot, three-component Mannich-type reaction of aromatic aldehydes, aromatic amines and cyclohexanone. The reaction was completed within 5-60 min to give the corresponding β-amino ketones in 82-98% yield at room temperature. The catalyst can be recycled at least four times without significant decrease in activity.