Copper-catalyzed oxidative cleavage of Passerini and Ugi adducts in basic medium yielding α-ketoamides
作者:Anirban Ghoshal、Mayur D. Ambule、Revoju Sravanthi、Mohit Taneja、Ajay Kumar Srivastava
DOI:10.1039/c9nj03533h
日期:——
oxidative cleavage of Passerini and Ugi adducts in the presence of base and copper(I) iodide is studied in detail. The oxidative cleavage yields α-ketoamides along with acids and amides from Passerini and Ugi adducts respectively. Mechanistic investigations revealed that the reaction proceeds via a radical pathway involving molecular oxygen. Control experiments with 18O-labeled Passerini adducts confirmed
An efficient iodine-mediatedoxidation reaction for ynamides has been developed to produce N-monosubstituted α-ketoamides and α-ketoimides. This oxidative method, which exhibits good functional group tolerance, was performed under mild conditions without a metal catalyst.
Synthesis of α-Ketoamides from β-Ketonitriles and Primary Amines: A Catalyst-Free Oxidative Decyanation-Amidation Reaction
作者:Ya-Kai Zhang、Bin Wang
DOI:10.1002/ejoc.201900900
日期:2019.9.8
A catalyst‐free oxidative decyanation–amidation reaction is developed for the synthesis of α‐ketoamides using β‐ketonitriles, primaryamines, and hydrogen peroxide sodium carbonate adduct (Na2CO3·1.5H2O2). This method is a valuable and simple strategy for the decyanation reaction.
使用β-乙腈,伯胺和过氧化氢碳酸钠加合物(Na 2 CO 3 · 1.5H 2 O 2)开发了无催化剂的氧化脱氰-酰胺化反应,用于合成α-酮酰胺。该方法是用于脱氰反应的有价值且简单的策略。