Isobutyraldehyde underwent auto-oxidation in the presence of molecular oxygen to generate an acyloxy radical under a “metal-free” environment. They were subsequently exploited in situ to afford hypervalent iodines with p-anisolyl iodide which generated substituted 1,3,4-oxadiazoles in moderate to excellent yields from N′-arylidene acetohydrazides. The reaction strategy tolerated diverse substitution
异丁醛在分子氧存在下进行自氧化,以在“无
金属”环境下生成酰氧基。随后将它们原位开发,以提供对-苯甲酰
碘的高价
碘,后者从N'-亚芳基乙酰
肼以中等至极好的收率生成取代的1,3,4-恶二唑。该反应策略容许在酰
肼底物上进行多种取代。对照实验和文献优先权支持了促进产物形成的原位
碘亚芳基配合物的形成。