Envirocat EPZ-10: An efficient catalyst for the synthesis of 3-acetoacetylcoumarins
                                
                                    
                                        作者:T.S. Shaikh、K.A. Undale、D.S. Gaikwad、D.M. Pore                                    
                                    
                                        DOI:10.1016/j.crci.2011.08.002
                                    
                                    
                                        日期:2011.11
                                    
                                    A simple, efficient and ecofriendly procedure has been developed for the synthesis of 3-acetoacetylcoumarins from salicylaldehyde(s) and 4-hydroxy-6-methyl-2H-pyran-2-one using EPZ-10 as a catalyst in ethanol medium at reflux condition. The present methodology offers several advantages such as excellent yields, short reaction time and use of EPZ-10 as an eco-friendly catalyst. (C) 2011 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.