Copper-Catalyzed Annulation of <i>O</i>-Acyl Oximes with Cyclic 1,3-Diones for the Synthesis of 7,8-Dihydroindolizin-5(6<i>H</i>)-ones and Cyclohexanone-Fused Furans
作者:Hai-Tao Yang、Su-Qing Zhou、Dan-Mei Chen、Zi-Jun Hu、Xiao-Qi Qiang、Xiao-Qing Song、Sheng Tan、Wei-Hua Jiang、Yong-Qiang Sun、Chun-Bao Miao
DOI:10.1021/acs.orglett.3c00003
日期:2023.2.10
A copper-catalyzed annulation of O-acyl oximes with cyclic 1,3-diones has been developed for the concise synthesis of 7,8-dihydroindolizin-5(6H)-ones and cyclohexanone-fused furans through the substituent-controlled selective radical coupling process. 2-Alkyl cyclic 1,3-diones undergo C–C radical coupling, while 2-unsubstituted cyclic 1,3-diones undergo C–O radical coupling.
铜催化的O-酰基肟与环状 1,3-二酮的环化已被开发用于通过取代基控制的选择性自由基简明合成 7,8-二氢中氮-5(6 H )-酮和环己酮稠合呋喃耦合过程。2-烷基环状 1,3-二酮进行 C-C 自由基偶联,而 2-未取代的环状 1,3-二酮进行 C-O 自由基偶联。