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Type: Artigo de periódico
Title: Zinc triflate as Lewis acid in nucleophilic addition to cyclic N-acyliminium ions
Author: Pilli, RA
Robello, LG
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.
Subject: zinc triflate
nucleophilic addition
N-acyliminium ions
Country: Alemanha
Editor: Georg Thieme Verlag Kg
Rights: embargo
Identifier DOI: 10.1055/s-2005-872659
Date Issue: 2005
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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