Highly Chemoselective NH- and O-Transfer to Thiols Using Hypervalent Iodine Reagents: Synthesis of Sulfonimidates and Sulfonamides
作者:Arianna Tota、Sahra St John-Campbell、Edward L. Briggs、Gala Ogalla Estévez、Michelle Afonso、Leonardo Degennaro、Renzo Luisi、James A. Bull
DOI:10.1021/acs.orglett.8b00788
日期:2018.5.4
converted to sulfonimidates or sulfonamides with three new S–X connections being made selectively in one pot. Using hypervalent iodine reagents in the presence of ammonium carbamate, NH- and O-groups are transferred under mild and practical conditions. Reducing the loading of ammonium carbamate changed the product distribution, converting the sulfonimidate to the sulfonamide. Studies into the possible
可以在一个罐中选择性地形成三个新的SX连接,从而将芳基硫醇选择性地转化为亚磺酰胺或磺酰胺。在氨基甲酸铵存在下使用高价碘试剂,可在温和且实际的条件下转移NH-和O-基团。减少氨基甲酸铵的负载量可改变产品分布,将亚磺酸磺酸盐转化为磺酰胺。提出了对可能的中间物种的研究,表明通过亚磺酸酯或相关的中间体可能有多种途径,每种物种形成相同的产物。