Copper-catalyzed aerobic oxidative C–O bond formation for the synthesis of 3,5-disubstituted isoxazoles from enone oximes
作者:Yadong Sun、Ablimit Abdukader、Haiyan Zhang、Wanle Yang、Chenjiang Liu
DOI:10.1039/c7ra11436b
日期:——
oxidative coupling reaction of enone oximes using a catalytic quantity of Cu(OAc)2. This method features an inexpensive metal catalyst, molecular oxygen as a green oxidant, good functional group tolerance and readily available starting materials. This attractive method for the synthesis of isoxazole derivatives is of great significance due to the product's versatile reactivity for further transformations.
Abstract A simple and efficient method has been developed for conversion of chalcone oximes to 3,5-diaryl isoxazoles in excellent yields under solvent-free conditions. The synthesized compounds were characterized by infrared spectroscopy, 1 H NMR, 13 C NMR and HRMS.
摘要研究了一种简单有效的方法,可在无溶剂条件下以优异的收率将查尔酮肟转化为3,5-二芳基异恶唑。合成的化合物通过红外光谱,1 H NMR,13 C NMR和HRMS进行表征。
TBAI-catalyzed intramolecular annulation of chalcone oximes toward isoxazoles
作者:Ablimit Abdukader、Yadong Sun、Zengpeng Zhang、Chenjiang Liu
DOI:10.1016/j.catcom.2017.11.008
日期:2018.2
A TBAI-catalyzed intramolecular annulation of chalcone oximes toward isoxazoles was developed, providing 3,5-diarylisoxazoles in good yields. Functional groups such as methoxy, ethyoxyl, chloro, bromo, fluoro and nitro were well tolerated in this reaction. Notably, the reaction ran under metal-free in water.
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