Metal-Free Radical Annulation of Oxygen-Containing 1,7-Enynes: Configuration-Selective Synthesis of (<i>E</i>)-3-((Arylsulfonyl)methyl)-4-Substituted Arylidenechromene Derivatives
作者:Kaimin Mao、Mouwang Bian、Lei Dai、Jinghang Zhang、Qiuyu Yu、Chang Wang、Liangce Rong
DOI:10.1021/acs.orglett.0c03946
日期:2021.1.1
A novel strategy for the synthesis of (E)-3-((arylsulfonyl)methyl)-4-substituted benzylidenechromene derivatives via a metal-free radical annulation reaction of oxygen-containing 1,7-enynes with thiosulfonates has been developed. The reaction shows broad substrate scope, wide functional group tolerance, and moderate to excellent yields. Moreover, thiosulfonates were well driven to achieve the bifunctionalization
通过含氧的1,7-烯炔与硫代磺酸盐的金属自由基环合反应,开发了一种新的策略来合成(E)-3-((芳基磺酰基)甲基)-4-取代的亚苄基亚甲基衍生物。该反应显示出宽的底物范围,宽的官能团耐受性和中等至优异的产率。此外,硫代磺酸盐被很好地驱动以实现衍生自脂族炔烃的oxo-1,7-烯炔的双官能化反应。另外,产物的(E)-构型由1,7-烯炔的结构高度控制。