Controllable Synthesis of Benzo[b]furo[2,3-d]azepines or Furo[3,2-b]indoles via Intermolecular Oxidative Annulation of 2-(Furan-2-yl)anilines and Propargyl Carbonates versus Intramolecular C–H Amination ReactionsClick to copy article linkArticle link copied!
- Rong MaRong MaSchool of Chemistry and Chemical Engineering, Linyi University, The middle of Shuangling Road, Linyi, Shandong 276000, People’s Republic of ChinaMore by Rong Ma
- Yujie QuYujie QuSchool of Chemistry and Chemical Engineering, Linyi University, The middle of Shuangling Road, Linyi, Shandong 276000, People’s Republic of ChinaMore by Yujie Qu
- Pengcheng GuanPengcheng GuanSchool of Chemistry and Chemical Engineering, Linyi University, The middle of Shuangling Road, Linyi, Shandong 276000, People’s Republic of ChinaMore by Pengcheng Guan
- Minghui LiuMinghui LiuSchool of Chemistry and Chemical Engineering, Linyi University, The middle of Shuangling Road, Linyi, Shandong 276000, People’s Republic of ChinaMore by Minghui Liu
- Yu Han*Yu Han*Email: [email protected]School of Chemistry and Chemical Engineering, Linyi University, The middle of Shuangling Road, Linyi, Shandong 276000, People’s Republic of ChinaMore by Yu Han
- Feng Feng*Feng Feng*Email: [email protected]Faculty of medicine, Linyi University, The middle of Shuangling Road, Linyi, Shandong 276000, People’s Republic of ChinaMore by Feng Feng
- Chengyu Wang*Chengyu Wang*Email: [email protected]School of Chemistry and Chemical Engineering, Linyi University, The middle of Shuangling Road, Linyi, Shandong 276000, People’s Republic of ChinaMore by Chengyu Wang
Abstract
Two novel Pd-catalyzed protocols for the controllable synthesis of benzo[b]furo[2,3-d]azepines and furo[3,2-b]indoles have been developed by intermolecular oxidative annulation of 2-(furan-2-yl)anilines and propargyl carbonates versus intramolecular C–H amination reactions. These two protocols feature great scalability, functional group tolerance, and relatively mild reaction conditions. Notably, the robust methodologies could also provide valuable opportunities for assembling azepine-fused benzothiophene, indole-fused benzothiophene, and indole-fused benzimidazole, which may have potential applications in the synthesis of related pharmaceuticals or polymeric materials.
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