Visible-Light-Induced Oxidation/[3+2] Cycloaddition/Oxidative Aromatization Sequence: A Photocatalytic Strategy To Construct Pyrrolo[2,1-a]isoquinolines
作者:You-Quan Zou、Liang-Qiu Lu、Liang Fu、Ning-Jie Chang、Jian Rong、Jia-Rong Chen、Wen-Jing Xiao
DOI:10.1002/anie.201102306
日期:2011.7.25
A ray of sunshine: The title reaction sequence using ethyl 2‐(3,4‐dihydroisoquinolin‐2(1H)‐yl)acetates with a series of electron‐deficient alkenes and alkynes provides rapid and efficient access to pyrrolo[2,1‐a]isoquinolines (see scheme; bpy=2,2′‐bipyridine, EWG=electron‐withdrawing group). The reaction offers a strategically new protocol for the direct and efficient construction of the core structure
一缕阳光:使用2-(3,4-二氢异喹啉-2-(1 H)-基)乙酸乙酯和一系列缺电子的烯烃和炔烃的标题反应序列可快速有效地获得吡咯并[2,1 -一个]异喹啉(参见方案;联吡啶= 2,2'-联吡啶,EWG =吸电子基团)。该反应为直接有效构建天然层状生物碱生物碱核心结构提供了具有战略意义的新方案。