Gold(I)-Catalyzed Conia-Ene Reaction of β-Ketoesters with Alkynes
作者:Joshua J. Kennedy-Smith、Steven T. Staben、F. Dean Toste
DOI:10.1021/ja049487s
日期:2004.4.1
The intramolecular addition of beta-ketoesters to unactivated alkynes under neutral conditions and at room temperature is described. The method employs triphenylphosphinegold(I) cation as a catalyst for the formation of exo-methylenecycloalkanes. Both monocyclic and bicyclic cyclopentanes and cyclohexanes can be formed in excellent yields and with good diastereoselectivity.