2-Aryl-3,4-dihydropyrans as building blocks for organic synthesis: ring-opening reactions with nucleophiles
                                
                                    
                                        作者:Minghao Li、Yanlong Gu                                    
                                    
                                        DOI:10.1016/j.tet.2011.08.075
                                    
                                    
                                        日期:2011.10
                                    
                                    An electrophilic ring-opening reaction of 2-aryl-3,4-dihydropyran with many nucleophiles, such as thiophenols, thiols, benzenesulfinic acid, resorcin, 2-methylfuran, benzamide and allyltrimethylsilane, was developed. In the presence of an appropriate catalyst, a product that contains not only a moiety of the nucleophile but also a fragment of 1,3-dicarbonyl compound was obtained. (C) 2011 Elsevier Ltd. All rights reserved.