Rhodium-Catalyzed Hydrosilylation Reaction of N-Sulfonyl-1,2,3-triazoles with Triphenylsilane: Access to Diverse Compounds

A highly efficient rhodium-catalyzed hydrosilylation of N-sulfonyl-1,2,3-triazoles has been developed. The protocol uses readily available N-sulfonyl-1,2,3-triazoles and triphenylsilane as starting materials, and the reactions first gave 2-(triphenylsilyl)-2-aryl-N-(arylsulfonyl) ethanimines, the isomerization of which provided (E)-2-(triphenylsilyl)-2-aryl-N-(arylsulfonyl) ethenamines in the presence of triethyl-amine; the reduction of which with LiAlH4 led to 2-(triphenylsilyl)-2-aryl-N-(arylsulfonyl) ethanamines. It is worthwhile to note that the obtained products could be converted into indole and arylethylamine derivatives. Therefore, the highly efficient rhodium-catalyzed hydrosilylation method is a valuable strategy for synthesis of diverse compounds.