Eco-friendly atom-economical synthesis of 2-substituted-benzo[d]thiazoles and 2-substituted-benzo[d]oxazoles using 2-acylpyridazin-3(2H)-ones
                                
                                    
                                        作者:Gi Hyeon Sung、In-Hye Lee、Bo Ram Kim、Dong-Soo Shin、Jeum-Jong Kim、Sang-Gyeong Lee、Yong-Jin Yoon                                    
                                    
                                        DOI:10.1016/j.tet.2013.02.093
                                    
                                    
                                        日期:2013.4
                                    
                                    Efficient and green syntheses of heterocycles are of great importance. In this work, we have demonstrated the synthesis of benzo[d]thiazoles and benzo[d]oxazoles using 2-acylpyridazin-3(2H)-ones as acyl transfer agents under transition-metal-free and eco-friendly conditions. It is worthy to note that the reaction is efficient, green, and economical, and will find several applications in organic synthesis, medicinal chemistry, and industrial chemistry. (C) 2013 Elsevier Ltd. All rights reserved.