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
[GRAPHICS]Sulfonimidates were prepared from sulfinamides and iodosobenzene in a very mild one-pot procedure in good to excellent yields. This reaction allows quick and efficient access to a class of molecules of important synthetic as well as biological and industrial interest.