Enantioselective Dearomative [3 + 2] Umpolung Annulation of <i>N</i>-Heteroarenes with Alkynes
作者:Peng Yang、Qiang Wang、Bing-Hui Cui、Xiao-Dong Zhang、Hang Liu、Yue-Yuan Zhang、Jia-Liang Liu、Wen-Yu Huang、Ren-Xiao Liang、Yi-Xia Jia
DOI:10.1021/jacs.1c11092
日期:2022.1.26
Enantioselective [3 + 2] annulation of N-heteroarenes with alkynes has been developed via a cobalt-catalyzed dearomative umpolung strategy in the presence of chiral ligand and reducing reagent. A variety of electron-deficient N-heteroarenes, including quinolines, isoquinolines, quinoxaline, and pyridines, and internal or terminal alkynes are employed in this reaction, showing a broad substrate scope
在手性配体和还原剂存在下,通过钴催化的脱芳环化策略开发了N-杂芳烃与炔烃的对映选择性[3 + 2] 环化。该反应使用了多种缺电子的N-杂芳烃,包括喹啉、异喹啉、喹喔啉和吡啶,以及内部或末端炔烃,显示出广泛的底物范围和良好的官能度耐受性。还开发了用炔烃环化富电子吲哚。该协议提供了对具有出色对映选择性的各种N-螺杂环分子的直接访问(76 个示例,高达 99% ee)。