AbstractCross-coupling reactions are essential for the synthesis of complex organic molecules. Here, we report a nickel-catalyzed Ullmann cross-coupling of two sp2-hybridized organohalides, featuring high cross-selectivity when the two coupling partners are used in a 1:1 ratio. The high chemoselectivity is governed by the bathocuproine ligand. Moreover, the mild reductive reaction conditions allow that a wide range of functional groups are compatible in this Ullmann cross-coupling.
跨偶联反应对于合成复杂有机分子至关重要。在这里,我们报告了一种镍催化的乌尔曼偶联反应,可以将两个sp2杂化有机卤化物进行偶联,当两个偶联配体以1:1的比例使用时,具有很高的交叉选择性。高化学选择性由巴索啉配体控制。此外,温和的还原反应条件使得在这种乌尔曼偶联中兼容各种功能基团。