Silyl Imine Electrophiles in Enantioselective Catalysis: A Rosetta Stone for Peptide Homologation, Enabling Diverse <i>N</i>-Protected Aryl Glycines from Aldehydes in Three Steps
作者:Dawn M. Makley、Jeffrey N. Johnston
DOI:10.1021/ol501297a
日期:2014.6.6
es serve in the Bis(AMidine)-catalyzed addition of bromonitromethane with a high degree of enantioselection. This allows for the production of a range of protected α-bromo nitroalkane donors (including Fmoc) for use in Umpolung Amide Synthesis (UmAS). Hence, peptide homologation with nonnatural aryl glycine amino acids is achieved in three steps from aromaticaldehydes, which are plentiful and inexpensive