Nitrogen Ligands in Copper-Catalyzed Arylation of Phenols: Structure/Activity Relationships and Applications
作者:Armelle Ouali、Jean-Francis Spindler、Anny Jutand、Marc Taillefer
DOI:10.1002/adsc.200600628
日期:2007.8.6
importance of ligand/copper-catalyzed arylations of nucleophiles in organic chemistry, the structural and electronic features that make a ligand efficient in these reactions have not been determined until now. In this work, several bidentate ligands involving pyridine and/or imine nitrogen binding sites such as our lead ligand 1 have been synthesized, and tested in phenol arylations with a view to
尽管在有机化学中亲核体的配体/铜催化的芳基化很重要,但到目前为止,尚未确定使配体在这些反应中有效的结构和电子特征。在这项工作中,已经合成了几个涉及吡啶和/或亚胺氮结合位点的二齿配体,例如我们的先导配体1,并在苯酚芳基化中进行了测试,以突出螯合物的结构与其功效之间的关系。这项研究使我们能够更精确地定义每个类型为N的作用-在催化过程中结合位点,并发现新的有效的配体。其中,亚氨基吡啶6a廉价且易于高收率制备,对于工业应用非常有吸引力。这里介绍了其应用领域的一些示例。将来,这项工作的发展可能允许在芳基化反应中更合理地设计有效配体,而无需借助经典的配体筛选。