Bicyclopyrroles are important synthetic equivalents of isoindoles, which are difficult to synthesize. Using bicyclopyrrole as a starting material, functional organic materials such as benzopyrromethene and benzoporphyrin can be synthesized. However, there are few reports on introducing substituents into bridging positions in bicyclopyrrole. By combining various reactions, we successfully obtained bicyclopyrroles with various substituents at the bridging positions.

中文翻译：

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在桥连位置具有各种取代基的双环吡咯的合成

双环吡咯是异吲哚的重要合成等同物，难以合成。使用双环吡咯作为起始原料，可以合成功能有机材料，例如苯并吡咯亚甲基和苯并卟啉。然而，关于将取代基引入双环吡咯的桥连位置的报道很少。通过结合各种反应，我们成功地获得了在桥连位置具有各种取代基的双环吡咯。