Lewis Acid‐Catalyzed Tandem Annulation of Propargylic Alcohols with 2‐Allylphenols and Their Anti‐tumor Activities
Xiang Li,
Ning‐Yu Guo,
Qing‐Hui Liu
et al.
Abstract:A novel bismuth(III) trifluoro‐methanesulfonate‐catalyzed and environmentally benign synthetic strategy for the construction of a wide range of structurally diverse, sophisticated [5,6,5]‐oxygen‐containing tricyclic frameworks with easy‐to handle propargylic alcohols and 2‐allylphenols as substrates in the presence of Bi(OTf)3 and AgOTf is described. This Lewis acid catalyzed [3 + 2] annulation protocol, which tolerates a great deal of functional groups, proceeds through a sequential Meyer‐Schuster rearrangeme… Show more
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