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Communication | Special issue | Vol 99, No. 2, 2019, pp.848-855
Published online, 19th December, 2018
DOI: 10.3987/COM-18-S(F)79
An Intermolecular [4+3] Cycloaddition Reaction Using 3-Hydroxy-2-pyrone Derivatives with an Oxyallyl Cation

Takahiro Suzuki,* Takamune Yanagisawa, and Keiji Tanino*

*Department of Chemistry, Faculty of Science, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-0810, Japan


An intermolecular [4+3] cycloaddition reaction using 3-hydroxy-2-pyrone derivatives with (2-silyloxy)allyl acetate was developed under Brønsted acid conditions to yield highly functionalized seven-membered carbocycles. The transformations of the cycloadducts are described.