作者:Congjun Yu、Zining Zhang、Guangbin Dong
DOI:10.1038/s41929-024-01120-9
日期:——
aryl–aryl bonds has been a fundamental challenge in organic synthesis due to the inertness of these bonds. Here we report a split cross-coupling strategy that allows twofold arylation with diverse aryl iodides through cleaving unstrained aryl–aryl bonds of common 2,2′-biphenols. The reaction is catalysed by a rhodium complex and promoted by a removable phosphinite directing group and an organic reductant
由于这些键的惰性,未过滤的芳基-芳基键的构建官能团化一直是有机合成中的一个基本挑战。在这里,我们报道了一种分裂交叉偶联策略,该策略允许通过裂解常见 2,2′-双酚的未过滤芳基-芳基键与不同的芳基碘化物进行双重芳基化。该反应由铑络合物催化,并由可移除的膦酸盐导向基团和有机还原剂(如四(二甲氨基)乙烯)促进。结合实验和计算机理研究揭示了一个限制周转的还原消除步骤,该步骤可以通过路易斯酸助催化剂加速。这种耦合方法的实用性已经在不对称的 2,6-二芳基酚和苯基单元的骨架插入的模块化和简化合成中得到了说明。