Mimicking Polyolefin Carbocyclization Reactions: Gold-Catalyzed Intramolecular Phenoxycyclization of 1,5-Enynes
作者:Patrick Yves Toullec、Thomas Blarre、Véronique Michelet
DOI:10.1021/ol900864n
日期:2009.7.2
PPh3AuNTf2 promotes highly efficient intramolecular phenoxycyclization reactions on 1,5-enynes under mild conditions. The original tricyclic and functionalized heterocycles were isolated in good to excellent yields. The 6-endo cyclization process is predominant and operates via a biomimetic cascade cation-olefin process. The efficiency of this system was further demonstrated in the cycloisomerization reaction of a 1,5,9-dienyne.