C−H Activation Based Copper‐Catalyzed One‐Shot Synthesis of N,O‐Bidentate Organic Difluoroboron Complexes
作者:Guangying Tan、Malte L. Schrader、Constantin Daniliuc、Felix Strieth‐Kalthoff、Frank Glorius
DOI:10.1002/anie.202008311
日期:2020.11.23
Organic BF2 complexes exhibit characteristics such as large Stokes shift, high quantum yield, strong emission intensity, and robust chemical stability, thereby being extensively used in various applications. Herein, we disclose a novel copper‐catalyzed cascade C−H activation/acyloxylation and difluoroboronation of 2‐phenylpyridine derivatives, thus providing a straightforward and rapid gateway to a
有机BF 2配合物表现出诸如大的斯托克斯位移,高的量子产率,强的发射强度和强大的化学稳定性等特性,因此被广泛用于各种应用中。本文中,我们公开了一种新型的铜催化的2-苯基吡啶衍生物的级联C / H活化/酰氧基化和二氟硼化反应,从而为一系列具有优异光物理性质的N,O-二齿有机BF 2复合物提供了直接而快速的途径。机理研究表明,AgBF 4可以作为BF 2的来源和氧化剂进行这种优雅的转化。这些BF 2中的大多数 配合物具有宽而强烈的吸收和发射带,并显示明亮而强烈的蓝色荧光以及较大的斯托克斯位移。