CeCl 3 ·7H 2 O-NaI-SiO 2 Catalyzed Aza-Michael Addition of N-Heterocycles to Enones under Solvent Free Conditions

E-mail: hwnlee@chungbuk.ac.krReceived August 1, 2012, Accepted August 16, 2012Key Words : aza-Michael addition, Pyrazole, Imidazole, Triazole The aza-Michael addition reaction promoted by Lewisacids and bases draws attention since it is one of the mostimportant carbon-nitrogen bond forming reactions in organicsynthesis. It is known that β-amino carbonyl compounds