Intramolecular Nitroalkene Diels-Alder Reaction Catalyzed by Brønsted Acids
作者:Norito Takenaka、Andreina Aguado
DOI:10.1055/s-0030-1260542
日期:2011.6
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. Catalyzedreactions 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