A Modular Approach to Dibenzo‐fused ϵ‐Lactams: Palladium‐Catalyzed Bridging‐C−H Activation
作者:Yinghua Yu、Liyao Ma、Jiajin Xia、Luoting Xin、Lei Zhu、Xueliang Huang
DOI:10.1002/anie.202007799
日期:2020.10.5
Tricyclic ring systems possessing a dibenzo structure joined to a seven‐membered heterocyclic ring frequently show important biological activities. However, a modular approach to these molecules based on efficient intermolecular reaction of readily available chemicals is lacking. Herein, an unprecedented palladium‐catalyzed formal [4+3] annulation for modular construction of these tricyclic systems is described
具有连接到七元杂环的二苯并结构的三环系统经常表现出重要的生物学活性。然而,缺乏基于易于获得的化学物质的有效分子间反应的针对这些分子的模块化方法。在这里,描述了史无前例的钯催化形式的[4 + 3]环状结构,用于这些三环系统的模块化结构。该反应具有易于获得的反应物(邻卤代芳基醛和N甲苯磺酰基hydr),广泛的底物范围和出色的官能团相容性。易于扩大规模的反应,复杂分子的后期修饰以及生物活性分子和批准药物的集体合成证明了合成潜力。