Tetrahedron Letters

The hydroamination of alkenes with sulfonamides catalyzed by the recyclable silica gel supported triflic acid

PN Liu, F Xia, Z Le Zhao, QW Wang, YJ Ren

文献索引：Liu, Pei Nian; Xia, Fei; Zhao, Zheng Le; Wang, Qing Wei; Ren, Yu Jie Tetrahedron Letters, 2011 , vol. 52, # 46 p. 6113 - 6117

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被引用次数: 12

摘要

The vast applications of triflic acid (TfOH) in catalysis are severely limited by its corrosive and fuming properties. Immobilization of TfOH on silica gel well solves these problems and affords efficient recovery and reusability of TfOH. Two types of supported TfOH, the prepared silica gel supported TfOH and the in situ silica gel adsorbed TfOH, both exhibit good catalytic activity and reusability in the hydroamination of alkene with sulfonamide. The in situ silica ...