Zinc tetrafluoroborate-catalysed synthesis of highly substituted pyrroles by a solvent-free reaction
                                
                                    
                                        作者:Brindaban C. Ranu、Sudip Ghosh、Arijit Das                                    
                                    
                                        DOI:10.1070/mc2006v016n04abeh002287
                                    
                                    
                                        日期:2006.1
                                    
                                    A simple and highly efficient synthesis of penta- and tri-substituted pyrroles has been developed using the Paal-Knorr reaction catalysed by aqueous zinc tetrafluoroborate at room temperature under solvent-free conditions.