Aerobic Multicomponent Tandem Synthesis of 3-Sulfenylimidazo[1,2-<i>a</i>]pyridines from Ketones, 2-Aminopyridines, and Disulfides
作者:Wenlei Ge、Xun Zhu、Yunyang Wei
DOI:10.1002/ejoc.201300905
日期:2013.9
reaction was developed for the synthesis of 3-sulfenylimidazo[1,2-a]pyridines from easily available ketones, 2-aminopyridines, and disulfides without DMSO or peroxide as an oxidant. This three-component tandem reaction process involves the formation of imidazo[1,2-a]pyridines followed by Friedel–Crafts sulfenylation in one pot under mild conditions. Both aryl and alkyl ketones afforded the desired products
开发了一个好氧的 CeCl3·7H2O/NaI 催化的 C-H 官能化反应,用于从容易获得的酮、2-氨基吡啶和二硫化物合成 3-硫基咪唑并[1,2-a]吡啶,无需 DMSO 或过氧化物作为氧化剂。这种三组分串联反应过程包括在温和条件下在一个锅中形成咪唑并 [1,2-a] 吡啶,然后进行 Friedel-Crafts 磺基化。在不存在其他添加剂的情况下,芳基酮和烷基酮均以良好至极好的产率提供所需产物。