Programmed Synthesis of Tetra-Aryl Thiophenes with Stepwise, Ester-Controlled Regioselectivity
作者:Cynthia Messina、Xavier Ottenwaelder、Pat Forgione
DOI:10.1021/acs.orglett.1c02447
日期:2021.10.1
Herein, we report a modular synthetic route to access tetra-arylated thiophene compounds with four different substituents with programmed chemical control provided by an ester activating/directing group. This method enables the functionalization of individual positions of thiophene sequentially via regioselective halogenations and cross-coupling reactions. The reaction sequence described provides tetra-arylated
在此,我们报告了一种模块化合成路线,以通过酯活化/导向基团提供的程序化化学控制来获得具有四种不同取代基的四芳基化噻吩化合物。该方法能够通过区域选择性卤化和交叉偶联反应顺序地对噻吩的各个位置进行功能化。所描述的反应顺序以比以前的路线更高的产率提供了四芳基噻吩,并采用了实用的反应方案、简单的催化系统和较短的反应时间。