Synthesis of N-Heterocyclic Carbine Silver(Ⅰ) and Palladium(Ⅱ) Complexes with Acylated Piperazine Linker and Catalytic Activity in Three Types of C-C Coupling Reactions

• 作者: Qingxiang Liu Xiantao Zhang Zhixiang Zhao Xinying Li Wei Zhang
• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2021,（3）
• 所属期刊栏目: Concise Reports
• 页码范围: 605-613
• 页数: 9页
• 语种: 英文
• DOI: 10.1002/cjoc.202000237

摘要

Two bis-imidazolium salts LH2·Cl2 and LH2·(PF6)2 with acylated piperazine linker and two N-heterocyclic carbene (NHC) silver(Ⅰ) and palladium(Ⅱ) complexes[L2Ag2](PF6)2 (1) and[L2Pd2Cl4](2) were prepared.The crystal structures of LH2·Cl2 and 1 were confirmed by X-ray analysis.In 1,one 26-membered macrometallocycle was generated through two silver(Ⅰ) ions and two bidentate ligands L.The catalytic activity of 2 was investigated in Sonogashira,Heck-Mizoroki and Suzuki-Miyaura reactions.The results displayed that these C-C coupling reactions can be smoothly carried out under the catalysis of 2.