Enantioselective Addition of Bromonitromethane to Aliphatic <i>N</i>-Boc Aldimines Using a Homogeneous Bifunctional Chiral Organocatalyst
作者:Kenneth E. Schwieter、Jeffrey N. Johnston
DOI:10.1021/acscatal.5b01901
日期:2015.11.6
This report details the enantioselectivesynthesis of β-amino-α-bromo nitroalkanes with β-alkyl substituents, using homogeneous catalysis to prepare either antipode. Use of a bifunctionalBrønstedbase/acid catalyst allows equal access to either enantiomer of the products, enabling the use of Umpolung Amide Synthesis (UmAS) to prepare the corresponding L- or D-α-amino amide bearing alkyl side chains—overall