Enantioselective Construction of Tetrasubstituted Carbon Stereocenters via Chiral Phosphoric Acid-Catalyzed Friedel–Craft Alkylation of Indoles with 5-Substituted Hydroxybutyrolactams
作者:Milane Saidah、Muhammad Idham Darussalam Mardjan、Géraldine Masson、Jean-Luc Parrain、Laurent Commeiras
DOI:10.1021/acs.orglett.2c01898
日期:2022.7.29
The first intermolecular organocatalytic enantioselective addition of indoles to prochiral 5-membered cyclic N-acyliminium ions, generated from 5-hydroxy-α,β-unsaturated pyrrolidin-2-ones, is reported hereinafter. The reaction proceeds smoothly with a range of 5-hydroxy-5-substituted-α,β-unsaturated pyrrolidin-2-ones and indoles using BINOL-derived phosphoric acid catalyst to afford α,β-unsaturated
下文报道了由 5-羟基-α,β-不饱和吡咯烷-2-酮生成的前手性 5 元环状N-酰基亚胺离子的首次分子间有机催化对映选择性加成。反应顺利进行,一系列 5-羟基-5-取代-α,β-不饱和吡咯烷-2-酮和吲哚使用 BINOL 衍生的磷酸催化剂得到嵌入四取代立体中心的 α,β-不饱和内酰胺。产率和对映选择性。