Merging C–H Vinylation with Switchable 6π-Electrocyclizations for Divergent Heterocycle Synthesis
作者:Xunjin Jiang、Zhixiong Zeng、Yuhui Hua、Beibei Xu、Yang Shen、Jing Xiong、Huijuan Qiu、Yifan Wu、Tianhui Hu、Yandong Zhang
DOI:10.1021/jacs.0c07680
日期:2020.9.9
Pyridinium-containing polyheterocycles exhibit distinctive biological properties, interesting electrochemical and optical properties, and thus are widely used as drugs, functional materials, and photocatalysts. Here, we describe a unified two-step strategy by merging Rh-catalyzed C-H vinylation with two switchable electrocyclizations, including aza-6π- and all-carbon 6π-electrocyclizations, for rapid
含吡啶的多杂环具有独特的生物学特性、有趣的电化学和光学特性,因此被广泛用作药物、功能材料和光催化剂。在这里,我们通过将 Rh 催化的 CH 乙烯基化与两个可切换的电环化(包括 aza-6π- 和全碳 6π-电环化)合并来描述统一的两步策略,以快速和发散地获得二氢吡啶并异喹啉鎓和二氢苯并喹啉。通过计算,在适当的“HCl”源存在下,在热条件或光化学条件下,氮杂电环化的高选择性是由于前沿轨道的有利动力学和对称性造成的。