the design, synthesis and study of anticancer properties of sulfenylated 2-phenylimidazo[1,2-a]pyridines and their analogues. A set of twenty sulfenylated imidazo[1, 2-a]pyridine derivatives were synthesized. Whereby elusive amendments to the imidazo[1,2-a]pyridine motif confer dramatic changes in functional affinity of a novel action to modulate anticanceractivity in seven different human cancer cell
Synthesis of imidazol[1,2-α]pyridine thioethers via using sulfur powder and halides as reactants
作者:Wei Wu、Yingcai Ding、Ping Xie、Qiujie Tang、Charles U. Pittman、Aihua Zhou
DOI:10.1016/j.tet.2017.02.065
日期:2017.4
generating regioselective alkyl-S- and Ar-S-substituted imidazol[1,2-α]pyridine derivatives in good yields under relatively environmentally friendly and mild conditions. This protocol enriches current thioether-producing methods, making up for the shortcomings of previous sulfenylation methods which can only make MeS- and ArS-substituted imidazol[1,2-α]pyridine derivatives.
Cu-catalyzed sulfenylation of imidazol[1,2-a]pyridine via C–H functionalization using a combination of Na<sub>2</sub>S<sub>2</sub>O<sub>3</sub> and halides
halides (Cl, Br, I) or iodobenzene homologues is described. The reactions proceeded smoothly, giving regioselective 2-phenylimidazo[1,2-a]pyridine thioether derivatives in good yields via a C–H functionalization process. More importantly, this method has extended the existing methods by offering a better method which can make both alkyl and aryl thioether derivatives under one set of reaction conditions
描述了通过使用无机盐Na 2 S 2 O 3和烷基卤化物(Cl,Br,I)或碘代苯同系物的新型铜催化的亚磺酰基化方法。反应进行得很顺利,通过C–H官能化过程可得到高选择性的区域选择性2-苯基咪唑并[1,2- a ]吡啶硫醚衍生物。更重要的是,该方法通过提供可以在一组反应条件下同时制备烷基和芳基硫醚衍生物的更好方法,扩展了现有方法。
One-pot synthesis of imidazo[1,2-α]pyridine thioethers using imidazo[1,2-α]pyridines, arylsulfonyl chlorides and hydrazine
作者:Jin Wang、Jie Zhu、Aihua Zhou
DOI:10.1080/10426507.2019.1686376
日期:2020.3.3
Abstract A one-pot reaction of making RS-substituted imidazo[1,2-α]pyridinederivatives by directly using aryl or alkylsulfonyl chloride and hydrazine was developed, selectively giving good yields of the expected products. Compared with previously reported methods of using ArSO2NHNH2 as a sulfur source, this method is much cheaper, more practical and convenient and enriches current methods to make
Regioselective sulfenylation of imidazoheterocycles with thiophenols at room temperature is reported. Sulfenylation is promoted by N-chlorosuccinimide under metal-free conditions with a broad range of substrate scopes.