Zinc Triflate as Lewis Acid in Nucleophilic Addition to Cyclic<i>N</i>-Acyliminium Ions
作者:Ronaldo Aloise Pilli、Luís Gustavo Robello
DOI:10.1055/s-2005-872659
日期:——
Zinc triflate-mediated nucleophilicaddition of allytrimethylsilane, silyl enol ethers and terminal acetylenes to cyclic N-acyliminium ions at room temperature in CH 2 Cl 2 is described. The corresponding α-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