Aza-Michael Reactions in Water Using Functionalized Ionic Liquids as the Recyclable Catalysts
X. Liu, M. Lu*, G. Gu and T. Lu
Chemical Engineering College, Nanjing University of Science and Technology, Nanjing 210094, China
Some recyclable SO3H-functionalized ionic liquids have been used as catalysts in water for the aza-Michael reactions of amines with α,β-unsaturated compounds to produce β-amino compounds. High yields of the products, short reaction times, mild reaction conditions, simple experimental procedure, reusable catalysts and no obvious loss of the catalytic activity make this protocol a contribution to organic chemistry.
Keywords: Aza-Michael reaction, Amine, β-Amino carbonyl compounds, Ionic liquid, Catalyst