title: Regioselective ortho olefination of aryl sulfonamide via rhodium-catalyzed direct C-H bond activation.
abstract: Rh(III)-catalyzed ortho C-H olefination of aryl sulfonamide directed by the SO2NHAc group is reported. This oxidative coupling process is achieved highly efficiently and selectively with a broad substrate scope. The reactions of N-tosylacetamide with acrylate esters afford ortho-alkenylated benzofused five-membered cyclic sulfonamides, whereas styrenes provide the direct diolefination products.
authors.affiliation: State Key Laboratory of Element-Organic Chemistry, Synergetic Innovation Center of Chemical Science and Engineering, College of Chemistry, Nankai University , Tianjin 300071, People's Republic of China.
authors.forename: Weijia
authors.initials: W
authors.lastname: Xie
authors.forename: Jie
authors.initials: J
authors.lastname: Yang
authors.forename: Baiquan
authors.initials: B
authors.lastname: Wang
authors.forename: Bin
authors.initials: B
authors.lastname: Li