Palladium-catalyzed site-selective hydrogen isotope exchange (HIE) reaction of arylsulfonamides using amino acid auxiliary
作者:Wei Liu、Xingyu Xu、Hongyan Zhao、Xiaoyu Yan
DOI:10.1016/j.tet.2018.06.024
日期:2018.7
Hydrogenisotopeexchange (HIE) is a versatile method for the introduction of deuterium to organic compounds. Herein, regioselective deuteration of sulfonamides is achieved by palladium-Catalyzed HIE reaction. By using amino acid as weakly coordination-directing auxiliary, a variety of sulfonamides are efficiently deuterated at the ortho-position. Placing competing directing groups on the aromatic