Intramolecular Nitroalkene Diels-Alder Reaction Catalyzed by Bronsted Acids

[摘要]：Bronsted acid catalysis of intramolecular Diels-Alder cyclizations of (E)-1-nitro-1,6,8-nonatrienes and (E)-1-nitro-1,7,9-decatrienes was investigated. Catalyzed reactions showed significantly higher endo selectivities than the corresponding thermal reactions. To our knowledge, this is the first example of catalysis (substoichiometric amount of catalysts) of the intramolecular nitroalkene Diels-Alder reaction.

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