Synthesis of Chlorinated Biphenyls by Suzuki Cross-Coupling Using Diamine or Diimine-Palladium Complexes
作者:Tuula Kylmälä、Noora Kuuloja、Youjun Xu、Kari Rissanen、Robert Franzén
DOI:10.1002/ejoc.200800119
日期:2008.8
and their reduced diamine counterparts 3b,3d–3g and 3i form complexes 4a–4i, 5b,5d–5g, and 5i with PdCl2 in DMF or methanol. Using 1 mol-% of the isolated complexes 4e and 5f many polychlorinated biphenyls (PCBs) can be prepared in moderate to excellent yields according to the Suzuki crosscoupling protocol with contact to air. Several 4-acetylbiphen
几种新型二亚胺(Salen 型配体)2a-2i 及其还原的二胺对应物 3b、3d-3g 和 3i 在 DMF 或甲醇中与 PdCl2 形成复合物 4a-4i、5b、5d-5g 和 5i。根据与空气接触的铃木交叉偶联方案,使用 1 mol% 的分离配合物 4e 和 5f,可以以中等至极好的产率制备许多多氯联苯 (PCB)。几种4-乙酰联苯