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
详细研究了存在碱和碘化铜(I)的Passerini和Ugi加合物的好氧氧化裂解。氧化裂解产生α-酮酰胺,以及来自Passerini和Ugi加合物的酸和酰胺。机理研究表明,该反应通过涉及分子氧的自由基途径进行。用18个O标记的Passerini加合物进行的对照实验证实,分子氧是α-酮酰胺中氧的来源。研究了各种Passerini和Ugi加合物,以探讨取代的影响。总的来说,本研究提供了对强碱性条件下Passerini和Ugi加合物的反应性的认识,以及制备α-酮酰胺的方法。