通过溶胶-凝胶法,使用廉价的原料制备了由氧化钛包裹的碘化亚铜纳米颗粒组成的催化剂,并通过对环境有益的,可持续的方案成功地将其用于炔烃的氧化酰胺化。彻底讨论了这种转变的作用机理。通过简单的方法,以中等到高收率,从多种富电子和不良底物合成各种α-酮基芳基酰胺的类似物,阐明了催化剂的坚固性,直至产生良好的可回收性。在无溶剂和有氧条件下进行五个循环。CuI @ TiO 2的化学性质,形貌和负载 通过TEM,SEM,XPS,EDX,粉末XRD,BET,TGA和ICP-MS对纳米催化剂进行了研究。
Copper-Catalyzed Aerobic Oxidative Cross-Dehydrogenative Coupling of Amine and α-Carbonyl Aldehyde: A Practical and Efficient Approach to α-Ketoamides with Wide Substrate Scope
A copper-catalyzedaerobicoxidative cross-dehydrogenative coupling (CDC) of amine with α-carbonyl aldehyde has been developed. Many types of amines are tolerant in this transformation leading to various α-ketoamides compounds. Wide substrate scope, CDC strategy and using air as oxidant make this transformation highly efficient and practical. Molecular oxygen acts not only as the oxidant, but also