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. 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
分子内狄尔斯的布朗斯台德酸催化——研究了 (E)-1-硝基-1,6,8-壬三烯和 (E)-1-硝基-1,7,9-癸三烯的阿尔德环化反应。催化反应显示出比相应的热反应显着更高的内向选择性。据我们所知,这是分子内硝基烯烃 Diels-Alder 反应催化(亚化学计量的催化剂量)的第一个例子。