Visible Light-Induced Radical Addition/Annulation to Construct Phenylsulfonyl-Functionalized Dihydrobenzofurans Involving an Intramolecular 1,5-Hydrogen Atom Transfer Process
作者:Shentong Xie、Yifan Li、Ping Liu、Peipei Sun
DOI:10.1021/acs.orglett.0c03038
日期:2020.11.20
A visible light-induced radical cascade reaction of 2-alkynylarylethers with sodium sulfinates was established for the synthesis of sulfonyl-functionalized dihydrobenzofurans, and an intramolecular 1,5-hydrogen atom transfer was involved in this transformation. This process provided an efficient and convenient C–C formation protocol for the construction of a dihydrobenzofuran ring. Various substituents
建立了可见光诱导的2-炔基芳基醚与亚磺酸钠的自由基级联反应,用于合成磺酰基官能化的二氢苯并呋喃,并且分子内的1,5-氢原子转移参与了该转化。该过程为构建二氢苯并呋喃环提供了有效而便捷的CC形成方案。反应中容许2-炔基芳基醚和亚磺酸钠上的各种取代基,并且以中等至良好的产率获得相应的产物。