Mononuclear Heterocyclic Rearrangement of 5-Arylisoxazole-3-hydroxamic Acids into 3,4-Substituted 1,2,5-Oxadiazoles
作者:Vladimir Potkin、Sergey Petkevich、Alexander Lyakhov、Ludmila Ivashkevich
DOI:10.1055/s-0032-1317947
日期:——
Abstract By a series of successive transformations, 5-arylisoxazole-3-carboxylic acids (aryl = phenyl, p-tolyl, 2,5-dimethylphenyl) have been converted into 5-arylisoxazole-3-hydroxamic acids, which undergo rearrangement by the action of aqueous KOH to form 3,4-substituted 1,2,5-oxadiazoles. The structure of one of them, 1-(2,5-dimethylphenyl)-2-(4-hydroxy-1,2,5-oxadiazol-3-yl)ethanone, has been confirmed
摘要 通过一系列连续的转化,5-芳基异恶唑-3-羧酸(芳基=苯基,对甲苯基,2,5-二甲基苯基)已被转化为5-芳基异恶唑-3-异羟肟酸,它们通过在KOH水溶液中形成3,4-取代的1,2,5-恶二唑。通过单晶X射线分析已经确认了其中一种的1-(2,5-二甲基苯基)-2-(4-羟基-1,2,5-恶二唑-3-基)乙酮的结构。 通过一系列连续的转化,5-芳基异恶唑-3-羧酸(芳基=苯基,对甲苯基,2,5-二甲基苯基)已被转化为5-芳基异恶唑-3-异羟肟酸,它们通过在KOH水溶液中形成3,4-取代的1,2,5-恶二唑。通过单晶X射线分析已经确认了其中一种的1-(2,5-二甲基苯基)-2-(4-羟基-1,2,5-恶二唑-3-基)乙酮的结构。