Cyclic amines and 1,3-diketones readily react under microwave irradiation to form ring-fused pyrroles in a single operation. A competing retro-Claisen pathway is efficiently suppressed by employing p-toluenesulfonic acid as an additive.
环胺和1,3-二酮在微波辐射下很容易在一次操作中反应形成环稠合的
吡咯。通过使用
对甲苯磺酸作为添加剂可有效地抑制竞争性逆克莱森途径。