Formal Asymmetric Organocatalytic [3+2] Cyclization between Enecarbamates and 3-Indolylmethanols: Rapid Access to 3-Aminocyclopenta[<i>b</i>]indoles
作者:Clément Lebée、Antti O. Kataja、Florent Blanchard、Géraldine Masson
DOI:10.1002/chem.201500749
日期:2015.6.1
A highly enantio‐ and diastereoselective synthesis of 3‐aminocyclopenta[b]indoles has been developed through formal [3+2] cycloaddition reaction of enecarbamates and 3‐indolylmethanols. This transformation is catalyzed by a chiral phosphoric acid that achieves simultaneous activation of both partners of the cycloaddition. Mechanistic data are also presented that suggest that the reaction occurs through
通过氨基甲酸酯和3-吲哚基甲醇的正式[3 + 2]环加成反应,已开发出高度对映体和非对映体选择性的3-氨基环戊[ b ]吲哚。该转化由手性磷酸催化,该手性磷酸实现了环加成的两个配偶体的同时活化。还提供了机理数据,表明该反应通过逐步途径发生。