Palladium(II)‐
<i>N</i>
‐heterocyclic carbene complexes: synthesis, characterization and catalytic application
作者:Suzan Çekirdek、Sedat Yaşar、İsmail Özdemir
DOI:10.1002/aoc.3143
日期:2014.6
N‐Heterocyclic carbenes (NHCs) are of great importance and are powerful ligands for transition metals. A new series of sterically hindered benzimidazole‐based NHC ligands (LHX) (2a, 2b, 2c, 2d, 2e, 2f), silver–NHC complexes (3a, 3b, 3c, 3d, 3e, 3f) and palladium–NHC complexes (4a, 4b, 4c, 4d, 4e, 4f) have been synthesized and characterized using appropriate spectroscopic techniques. Studies have focused
N-杂环卡宾(NHC)非常重要,并且是过渡金属的强大配体。一系列新的空间受阻的基于苯并咪唑的NHC配体(LHX)(2a,2b,2c,2d,2e,2f),银-NHC络合物(3a,3b,3c,3d,3e,3f)和钯-NHC络合物(4a,4b,4c,4d,4e,4f)已使用适当的光谱技术合成和表征。研究集中于开发更有效的芳基氯的Suzuki偶联反应催化体系。研究了Pd-NHC配合物和原位制备的Pd(OAc)2 / LHX催化剂在温和的反应条件下在N,N-二甲基甲酰胺(DMF)水溶液中的Suzuki交叉偶联反应的催化性能。这些络合物平稳地催化了富电子和贫电子芳基氯的Suzuki-Miyaura反应。版权所有©2014 John Wiley&Sons,Ltd.