Rhodium(III)-Catalyzed<i>ortho</i>-Heteroarylation of Phenols through Internal Oxidative CH Activation: Rapid Screening of Single-Molecular White-Light-Emitting Materials
作者:Bijin Li、Jingbo Lan、Di Wu、Jingsong You
DOI:10.1002/anie.201507272
日期:2015.11.16
Reported herein is the first example of a transition‐metal‐catalyzed internal oxidative CH/CH cross‐coupling between two (hetero)arenes through a traceless oxidation directing strategy. Without the requirement of an external metal oxidant, a wide range of phenols, including phenol‐containing natural products, can undergo the coupling with azoles to assemble a large library of highly functionalized
本文报道的是过渡金属催化的内部氧化CH / C的第一个例子通过无痕氧化引导策略在两个(杂)芳烃之间进行H交叉偶联。在不需要外部金属氧化剂的情况下,各种各样的酚(包括含酚的天然产物)可以与唑类偶联,从而组装出一个高度官能化的2-(2-羟基苯基)唑类大型文库。该路线为快速筛选发白光的材料提供了机会。作为说明性的例子,两个双(三苯胺)的2-(2-羟基苯基)恶唑类化合物很难获得,它们显示出明亮的白光发射,高量子产率和热稳定性。还呈现白色光发射的第一例中,在一个单一的激发态分子内质子转移系统,2-(2-羟基苯基)吡咯,从而突出C的魅力在新的有机光电子材料的发现中进行H活化。