Heterocyclic Lithium Amides as Chiral Ligands for an Enantioselective Hydroxyalkylation with <i>n</i>-BuLi
作者:Nicolas Duguet、Sylvain M. Petit、Philippe Marchand、Anne Harrison-Marchand、Jacques Maddaluno
DOI:10.1021/jo8005396
日期:2008.7.1
Chiralheterocyclic structures based on 3-aminopyrrolidines (3APs), 3-aminotetrahydrothiophens (3ATTs), and 3-aminotetrahydrofurans (3ATFs) have been synthesized. The corresponding lithium amides have been evaluated as chiralligands in the condensation of n-BuLi on o-tolualdehyde. The returned levels of induction were in the 46−80% ee range. The cheap and easily prepared 3ATFLi’s turned out to be