and synthetic pharmaceuticals. Here, a new gold-catalyzed cycloaddition of alkynes with azadienes to access tetrasubstituted pyrroles is demonstrated. The neighboring hydroxylmethyl group serves a very important directing group through an addition/cycloaddition/elimination cascade. Diverse polysubstituted pyrroles were synthesized in good yields under mild conditions in one step, and tricyclic pyrrole
多取代
吡咯是许多
生物活性
天然产物和合成药物中非常重要的支架。在这里,展示了一种新的
金催化
炔烃与氮杂二烯的环加成反应来获得四取代
吡咯。相邻的羟甲基通过加成/环加成/消除级联作为非常重要的导向基团。在温和条件下一步合成多种多取代
吡咯,收率良好,衍生化容易得到含杂环的
三环吡咯。