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Regioselective ortho olefination of aryl sulfonamide via rhodium-catalyzed direct C-H bond activation. 2014
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.
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.
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