Copper-Catalyzed N–O Cleavage of α,β-Unsaturated Ketoxime Acetates toward Structurally Diverse Pyridines
作者:Lei Zhang、Jindian Duan、Gaochen Xu、Xiaojuan Ding、Yiyang Mao、Binsen Rong、Ning Zhu、Zheng Fang、Zhenjiang Li、Kai Guo
DOI:10.1021/acs.joc.9b03238
日期:2020.2.21
The copper-catalyzed [4 + 2] annulation of α,β-unsaturated ketoxime acetates with 1,3-dicarbonyl compounds for the synthesis of three classes of structurally diverse pyridines has been developed. This method employs 1,3-dicarbonyl compounds as C2 synthons and enables the synthesis of multifunctionalized pyridines with diverse electron-withdrawing groups in moderate to good yields. The mechanistic investigation
已经开发了铜催化的α,β-不饱和酮肟肟乙酸盐与[1,3-二羰基化合物的铜催化[4 + 2]环合反应,用于合成三类结构多样的吡啶。该方法采用1,3-二羰基化合物作为C2合成子,并能够以中等至良好的产率合成具有不同吸电子基团的多官能吡啶。机理研究表明反应是通过离子途径进行的。