Amid(e) them all: Primarycarboxamides and ureas react with aromatic and aliphatic amines in the presence of a copper catalyst to give a wide range of functionalized amides (see scheme).
triflate and (R,R)-Ph-BOX as a catalyst. This method was successfully applied to a variety of 2-hydroxyalkanamides in high enantioselectivity with up to 92% ee, and then tosylated product was easily transformed into opticallyactive α-amino acid derivatives.
Chemo- and Enantioselective Reduction of α-Keto Amides to α-Hydroxy Amides using Reusable CuO-Nanoparticles as Catalyst
作者:Gollapalli Narasimha Rao、Govindasamy Sekar
DOI:10.1021/acs.joc.3c00090
日期:2023.3.17
(CuO-NPs) and (R)-(−)-DTBM SEGPHOS catalyzed chemo- and enantioselectivereduction of α-keto amides to α-hydroxy amides has been developed. The scope of the reaction has been studied with various α-keto amides containing electron-donating and electron-withdrawing groups affording the enantiomerically enriched α-hydroxy amides in good yields with excellent enantioselectivity. The CuO-NPs catalyst has been