An efficient synthesis of α-acyloxyketone by Cu(acac)2-catalyzed insertion reaction of α-diazoketone to carboxylic acid
                                
                                    
                                        作者:Tetsuro Shinada、Tadashi Kawakami、Hiroshi Sakai、Ichinori Takada、Yasufumi Ohfune                                    
                                    
                                        DOI:10.1016/s0040-4039(98)00578-4
                                    
                                    
                                        日期:1998.5
                                    
                                    An efficient insertion reaction of alpha-diazoketone to various carboxylic acids was achieved by using Cu(acac)(2) as a catalyst. Treatment of the diazo compound with a carboxylic acid (1.2 equiv) in the presence of Cu(acac)(2) (0.1 equiv) at room temperature afforded the corresponding ketoester in good yield. Various kinds of functional groups were tolerated under the reaction conditions. (C) 1998 Elsevier Science Ltd. All rights reserved.