The direct C(sp2)-H functionalization and coupling of aromatic N-heterocycles with (hetero)aryl bromides by [PdX2(imidazolidin-2-ylidene)(Py)] catalysts
作者:Murat Kaloğlu、Ichraf Slimani、Namık Özdemir、Nevin Gürbüz、Naceur Hamdi、İsmail Özdemir
DOI:10.1016/j.jorganchem.2021.122013
日期:2021.10
In this study, a series of air- and moisture-stable imidazolidin-2-ylidene-based new palladium complexes with the general formula [PdX2(NHC)(Py)] were synthesized (NHC = N-heterocyclic carbene, Py = pyridine, X = Cl or I). The structures of the palladium complexes were characterized by different techniques such as 1H NMR, 13C NMR, FT-IR spectroscopy and elemental analysis. The more detailed structural
本研究合成了一系列空气和湿气稳定的咪唑啉-2-亚基新型钯配合物,通式为[PdX 2 (NHC)(Py)](NHC = N-杂环卡宾,Py = 吡啶, X = Cl 或 I)。钯配合物的结构通过1 H NMR、13C NMR、FT-IR光谱和元素分析。通过单晶 X 射线衍射研究确定了一种钯配合物的更详细的结构特征。所有钯配合物的催化活性在五元芳族 N-杂环如 3,5-二甲基异恶唑和 1-甲基-1H-吡咯-2-甲醛与(杂)芳基溴化物存在 1 120 °C 时的 mol% 催化剂负载量。以中等至良好的产率获得了所需的产品。