Generation of 4-iodoisocoumarins through a TBAI-mediated oxidative cyclization of 2-alkynoates
                                
                                    
                                        作者:Jin Luo、Miao He、Puqing Chen、Jinjiang Li                                    
                                    
                                        DOI:10.1080/00397911.2018.1465094
                                    
                                    
                                        日期:2018.7.18
                                    
                                    A tetra-butylammonium iodide (TBAI)-mediated oxidative iodocyclization of 2-alkynoates for the synthesis of various 4-iodoisocoumarin is described herein, and the reaction is highly efficient and shows broad functional group tolerance. This newly developed reaction uses a mixture of water and DCE as co-solvent, and avoids the use of iodine as iodine source for the electrophilic halocyclization.[GRAPHICS].