Facile Oxidative Addition of Organic Halides to Heteroleptic and Homoleptic Pd
<sup>0</sup>
–N‐Heterocyclic Carbene Complexes
作者:Jung‐Hyun Lee、Hyeong‐Tak Jeon、Yong‐Joo Kim、Kyung‐Eun Lee、Young Ok Jang、Soon W. Lee
DOI:10.1002/ejic.201001257
日期:2011.4
corresponding bis(NHC)–Pd0 complexes [Pd(NHC)2] (NHC = IPr, 3; SIPr, 4). Complexes 1–4 readily reacted with dichloromethane or chloroform to give C–Cl oxidative addition products. In addition, the reactivity of complex 2 toward other organic halides such as bromobenzene, trans-1,2-dichloroethylene, and 5,5′-dibromo-2,2′-bithiophene to produce the corresponding oxidative addition products was investigated
具有 N-杂环卡宾 (NHC) 配体 [(Me3P)Pd(NHC)] (NHC = IPr, 1; SIPr, 2) 的新型杂配 Pd0 配合物从 [Pd(CH2=CHPh)(PMe3)2] 和等量的 NHC [NHC = 1,3-双(2,6-二异丙基苯基)咪唑-2-亚基 (IPr) 或 1,3-双(2,6-二异丙基苯基)-4,5-二氢咪唑-2-亚基(SIPr)]。用额外的等摩尔 NHC 进一步处理复合物 1 和 2 得到相应的双 (NHC)-Pd0 复合物 [Pd(NHC)2] (NHC = IPr, 3; SIPr, 4)。配合物 1-4 很容易与二氯甲烷或氯仿反应生成 C-Cl 氧化加成产物。此外,还研究了配合物 2 与其他有机卤化物如溴苯、反式-1,2-二氯乙烯和 5,5'-二溴-2,2'-联噻吩的反应性,以产生相应的氧化加成产物。最后,