Nickel‐catalyzed umpolung C S radical reductive cross coupling of S‐(trifluoromethyl)arylsulfonothioates with alkyl halides
作者:Yu-Zhong Yang、Gui-Fen Lv、Ming Hu、Yang Li、Jin-Heng Li
DOI:10.1016/j.cclet.2023.108590
日期:2023.11
A new cooperative nickel reductive catalysis and N,N-dimethylformamide-mediated strategy for umpolung CS radical reductive cross coupling of S-(trifluoromethyl)arylsulfonothioates with alkyl halides to produce alkyl aryl thioethers is described. This reaction features excellent selectivity, wide functionality tolerance, broad substrate scope, and facile late-stage modification of biologically relevant
描述了一种新的协同镍还原催化和N,N-二甲基甲酰胺介导的策略,用于S- (三氟甲基)芳基硫代磺酸酯与烷基卤的 C S 自由基还原交叉偶联生产烷基芳基硫醚。该反应具有优异的选择性、广泛的功能耐受性、广泛的底物范围以及易于对生物相关分子进行后期修饰。机理研究认识到,通过用 Sn 热诱导 DMF还原,最初生成酰胺自由基阴离子,然后进行反极化还原和亲核磺酰基部分的单电子转移,形成巯基自由基并与 Ni 0 /Ni I /Ni III接合/Ni I催化循环。