Improved Synthesis of 1-Oxo-1,2,3,4-tetrahydroacridine-9-carboxylic Acids from Isatins and 1,3-Cyclohexanedione
                                
                                    
                                        作者:Lizhen Fang、Qinghua Lv、Chenjuan Lu、Pengfei Wang                                    
                                    
                                        DOI:10.3987/com-12-12479
                                    
                                    
                                        日期:——
                                    
                                    An improved protocol for the preparation of 1-oxo-1,2,3,4-tetrahydroacridine-9-carboxylic acid derivatives via Pfitzinger condensation under acidic conditions is described, it provides a simple one-pot synthetic method for some useful 1-oxo-1,2,3,4-tetrahydroacridine-9-carboxylic acids which could not be synthesized successfully by Pfitzinger reactions under usual conditions using the corresponding isatins and 1,3-diketones. All the synthesized compounds are characterized by spectral data.