Ferric Hydrogensulfate-Catalyzed One-Pot Synthesis of Indeno[1,2-<i>b</i>]quinoline-7-ones
                                
                                    
                                        作者:Hossein Eshghi、Mohammad Ali Nasseri、Reza Sandaroos、Hamid Reza Molaei、Saman Damavandi                                    
                                    
                                        DOI:10.1080/15533174.2011.613887
                                    
                                    
                                        日期:2012.4.1
                                    
                                    Ferric hydrogensulfate was found to be an efficient catalyst for the three-component synthesis of indeno[1,2-b]quinoline-7-one derivatives through one-pot condensation of 1-naphthylamine or 1-antharacylamine, aromatic aldehydes, and 1,3-indandione. The catalyst could be recovered conveniently and reused at least four times without any loss of activity. The efficient method has the advantages of inexpensiveness of the catalyst, short reaction times, simplicity, easy workup, and good to excellent yields.