An iron-TEMPO-catalyzed (TEMPO = 2,2,6,6-tetramethyl-1-piperidinyloxy), aerobic process was developed to synthesize α-ketoamides. This reaction proceeds through a dominoalcoholoxidation/oxidativecross-dehydrogenativecoupling sequence, uses 2-hydroxyacetophenones and amines as the starting materials, and takes place under molecular oxygen, which makes the transformation highly efficient, practical
A Palladium(II)-Catalyzed Synthesis of α-Ketoamides<i>via</i>Chemoselective Aroyl Addition to Cyanamides
作者:Srimanta Guin、Saroj Kumar Rout、Anupal Gogoi、Wajid Ali、Bhisma K. Patel
DOI:10.1002/adsc.201400011
日期:2014.8.11
AbstractAn acyl moiety generated from α‐oxocarboxylic acids via decarboxylation undergoes a palladium‐catalyzed chemoselective insertion into organic cyanamides to afford N‐monosubstituted α‐ketoamides.magnified image
Copper-Catalyzed Aerobic Oxidative Coupling of Aryl Acetaldehydes with Anilines Leading to α-Ketoamides
作者:Chun Zhang、Zejun Xu、Liangren Zhang、Ning Jiao
DOI:10.1002/anie.201105285
日期:2011.11.18
reaction provides an efficient route to α‐ketoamides compounds, which are ubiquitous structural units in a number of biologically active compounds. N‐substituted anilines are suitable substrates for this transformation. Two CH bonds as well as one CH and one NH bond are cleaved in this reaction. Molecular oxygen (1 atm) is used as the oxidant and the reaction involves dioxygen activation.