Palladium‐catalyzed bicyclization of 1‐(2,2‐dibromovinyl)‐2‐alkenylbenzene with allenyl malonates has been achieved to afford a series of bicyclic compounds. The protocol involves intermolecular carbopalladation of allenes/cyclization/internal Heck reaction. Three C‐C bonds and two rings are formed in one step.

中文翻译：

---

钯催化 1-(2,2-二溴乙烯基)-2-烯基苯与丙二酸烯丙酯的双环化


钯催化的 1-(2,2-二溴乙烯基)-2-烯基苯与丙二烯丙二酸酯的双环化已实现，得到一系列双环化合物。该方案涉及丙二烯的分子间碳钯化/环化/内部 Heck 反应。一步形成三个 C-C 键和两个环。