Regioselective Ortho Olefination of Aryl Sulfonamide via Rhodium-Catalyzed Direct C–H Bond Activation
作者:Weijia Xie、Jie Yang、Baiquan Wang、Bin Li
DOI:10.1021/jo5015239
日期:2014.9.5
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.
据报道,Rh(III)催化了由SO 2 NHAc基团引导的芳基磺酰胺的邻位C-H烯基化反应。这种氧化偶联过程可以在广泛的基材范围内高效高效地进行。N-甲苯磺酰基乙酰胺与丙烯酸酯的反应提供了邻链烯基化的苯并稠合的五元环磺酰胺,而苯乙烯提供了直接的二烯化产物。