Synthesis of functionalized 2-alkoxybenzoates, 2-aryloxybenzoates and xanthones based on formal [3+3] cyclocondensations of 3-alkoxy- and 3-aryloxy-1-silyloxy-1,3-butadienes with 3-silyloxy-2-en-1-ones
                                
                                    
                                        作者:Gerson Mroß、Helmut Reinke、Christine Fischer、Peter Langer                                    
                                    
                                        DOI:10.1016/j.tet.2009.02.052
                                    
                                    
                                        日期:2009.5
                                    
                                    Functionalized 2-alkoxy- and 2-aryloxybenzoates were prepared by formal [3+3] cyclocondensations of 3-alkoxy- and 3-aryloxy-1-silyloxy-1,3-butadienes with 3-silyloxy-2-en-1-ones. The reaction of 2-aryloxybenzoates with concentrated sulfuric acid resulted in the formation of xanthones. (C) 2009 Elsevier Ltd. All rights reserved.