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|Type:||Artigo de periódico|
|Title:||Zinc triflate as Lewis acid in nucleophilic addition to cyclic N-acyliminium ions|
|Abstract:||Zinc triflate-mediated nucleophilic addition of allytrimethylsilane, silyl enol ethers and terminal acetylenes to cyclic N-acyliminium ions at room temperature in CH2Cl2 is described. The corresponding a-substituted heterocycles were obtained in moderate to good yields. The versatility of this reagent was demonstrated in the one-pot generation of the N-acyliminium ion and the zinc alkynylide species, followed by their coupling reaction to afford propargylic adducts in moderate yields.|
|Editor:||Georg Thieme Verlag Kg|
|Appears in Collections:||Artigos e Materiais de Revistas Científicas - Unicamp|
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