Synthesis of Highly Functionalized Polycyclic Quinoxaline Derivatives Using Visible-Light Photoredox Catalysis
作者:Zhi He、Minwoo Bae、Jie Wu、Timothy F. Jamison
DOI:10.1002/anie.201408522
日期:2014.12.22
A mild and facile method for preparing highly functionalized pyrrolo[1,2‐a]quinoxalines and other nitrogen‐rich heterocycles, each containing a quinoxaline core or an analogue thereof, has been developed. The novel method features a visible‐light‐induced decarboxylative radical coupling of ortho‐substituted arylisocyanides and radicals generated from phenyliodine(III) dicarboxylate reagents and exhibits
已经开发了一种温和而简便的方法来制备高度官能化的吡咯并[1,2-a]喹喔啉和其他富含氮的杂环,每个杂环均含有喹喔啉核心或其类似物。该新方法具有邻位取代的芳基异氰化物与苯基碘(III)二羧酸盐试剂生成的自由基的可见光诱导的脱羧自由基偶联,并具有出色的官能团相容性。已经制备了多种喹喔啉杂环。最后,在三步连续流系统中,通过串联在线异氰酸酯的形成和光化学环化的集成,对这些多环化合物进行了望远镜制备。