The use of sulfur ylides in the synthesis of 3-alkyl(aryl)thio-4-trifluoromethylpyrroles from mesoionic 4-trifluoroacetyl-1,3-oxazolium-5-olates
                                
                                    
                                        作者:Ryosuke Saijo、Masami Kawase                                    
                                    
                                        DOI:10.1016/j.tetlet.2012.03.130
                                    
                                    
                                        日期:2012.5
                                    
                                    In this report, we describe a new method for the synthesis of densely functionalized pyrroles. Reaction of mesoionic 1,3-oxazolium-5-olates with various S-ylides proceeds via nucleophilic addition followed by opening of the oxazole ring and subsequent cyclization to multisubstituted pyrroles bearing both a trifluoromethyl and alkyl(aryl)thio group at 3- and 4-positions.
                                    在这份报告中,我们描述了一种合成高密度官能化
吡咯的新方法。通过亲核加成反应,使中离子1,3-
恶唑基5-
油酸酯与各种S-基化物反应,然后打开
恶唑环,随后环化成在3-和4位同时带有三
氟甲基和烷基(芳基)
硫基的多取代
吡咯-位置。