Copper-catalyzed radical/radical cross-coupling of ketoxime carboxylates with 4-hydroxycoumarins: A novel synthesis of furo[3,2-c]-coumarins
作者:Mingchuang He、Zhaohua Yan、Wangyang Wang、Fuyuan Zhu、Sen Lin
DOI:10.1016/j.tetlet.2018.09.007
日期:2018.10
A novel and efficient strategy for the synthesis of furo[3,2-c]coumarins has been developed via copper-catalyzed radical/radical cross-coupling of ketoxime carboxylates with 4-hydroxycoumarins. This redox-neutral reaction allows smooth and selective synthesis of 2-substituted, 3-substituted, 2,3-disubstituted and 2,3-fused polycyclic furo[3,2-c]coumarins.
通过铜催化酮肟肟酸酯与4-羟基香豆素的自由基/自由基交叉偶联,已经开发了一种新型有效的合成呋喃[3,2- c ]香豆素的策略。该氧化还原中性反应允许2-取代,3-取代,2,3-二取代和2,3-稠合的多环呋喃[3,2- c ]香豆素的平滑和选择性合成。