Hydrazonyl Radical-Participated Tandem Reaction: A Strategy for the Synthesis of Pyrazoline-Functionalized Oxindoles
作者:Xiao-Yong Duan、Xiu-Long Yang、Pan-Pan Jia、Man Zhang、Bing Han
DOI:10.1021/acs.orglett.5b03003
日期:2015.12.18
efficient and practical tandem cyclization/addition/cyclization strategy is developed for the initial generated hydrazonyl radicals derived from the oxidation of β,γ-unsaturated hydrazones. By using this protocol, structurally novel pyrazoline-functionalized oxindoles are prepared by the reaction of easily accessible β,γ-unsaturated hydrazones with N-aryl acrylamides under the metal- and solvent-free conditions
针对由β,γ-不饱和的氧化衍生的初始生成的肼基自由基,开发了一种有效且实用的串联环化/加成/环化策略。通过使用该协议,结构简单的吡唑啉官能化的羟吲哚是通过使易于获得的β,γ-不饱和)与N-芳基丙烯酰胺在DTBP(无二叔丁基过氧化物)的无金属和无溶剂条件下反应而制备的。串联的分子内/分子间C–N / C–C / CC碳键形成。