Cu-Catalysed oxidative amidation of cinnamic acids/arylacetic acids with 2° amines: An efficient synthesis of α-ketoamides

Abstract

A new and convenient copper-catalysed synthesis of α-ketoamides has been accomplished using readily available cinnamic acids/arylacetic acids and 2° amines in an open atmosphere. The reaction between cinnamic acid and amine involves the formation of enamine followed by its aerobic oxidation, whereas the reaction of arylacetic acid with amine involves amide formation followed by benzylic methylene oxidation. © 2019 The Royal Society of Chemistry.