Novel iodine-induced sulfonylation and sulfenylation of imidazopyridines have been described using sodium sulfinates as the sulfur source. This strategy enables highly selective difunctionalization of imidazo[1,2-a]pyridine to access sulfones and sulfides in good yields. A wide range of substrates and functional groups were well-tolerated under optimized conditions. Moreover, control experiments have
已经描述了使用亚
磺酸钠作为
硫源的新的
碘诱导的
咪唑并
吡啶的磺酰化和亚磺酰化。该策略能够使
咪唑并[1,2- a ]
吡啶高度选择性地进行双官能化,从而以高收率获得砜和
硫化物。在最佳条件下,各种底物和官能团均具有良好的耐受性。此外,已经进行了对照实验,表明了反应机理中涉及的自由基途径。