Highly efficient aza-Michael reactions of aromatic amines and N-heterocycles catalyzed by a basic ionic liquid under solvent-free conditions

摘要

A task-specific basic ionic liquid,[Bmim]OH,has been introduced as a catalyst for the aza-Michael addition of aromatic amines and N-heterocycles to cyclic or acyclic ketones under neat conditions.The catalyst can be recycled for subsequent reactions without any appreciable loss of efficiency.