Biaryl-substituted monophosphine-based ligands have been synthesized by transition-metal-free “ARYNE” cross-coupling reaction of aryllithiums with 1,2-dibromobenzene and subsequent regioselective functionalization through bromine–lithium interconversion. These ligands were employed in palladium-catalyzed C–N bond-forming reactions. The reaction was found to be general with wide substrate applicability
通过芳基
锂与
1,2-二溴苯的无过渡
金属“ARYNE”交叉偶联反应和随后通过
溴-
锂互变进行区域选择性功能化,已经合成了基于联芳基取代的单膦基
配体。这些
配体用于
钯催化的 C-N 键形成反应。发现该反应具有广泛的底物适用性。在微波辐射下,多种
伯胺和仲胺与一系列不同取代的卤代苯成功偶联,以良好或优异的产率得到预期产物。