Regioselective synthesis of some isoxazolines and isoxazolidines bearing caprolactam moiety
作者:Akın Sağirli、Yaşar Dürüst
DOI:10.1080/00397911.2018.1448934
日期:2018.6.18
room temperature and the best protocol have been found for the transformation of nitrones to N-methyl isoxazolidines is silver acetate in refluxing xylene. The structural identification of target compounds was established by IR, nuclear magnetic resonance (NMR), high resolution mass spectrometry (HRMS) spectra, and X-ray diffraction analyses. GRAPHICAL ABSTRACT
摘要异恶唑啉和异恶唑烷系列是通过芳香醛酮和腈氧化物与 N-乙烯基己内酰胺通过区域选择性 1,3-偶极环加成反应获得的,仅以中等产率产生 5-己内酰胺取代的区域异构体。使用不同条件优化环加成反应。用于将腈氧化物转化为异恶唑的一种是室温下的三乙胺,并且已发现将硝酮转化为 N-甲基异恶唑的最佳方案是回流二甲苯中的乙酸银。目标化合物的结构鉴定是通过红外、核磁共振 (NMR)、高分辨率质谱 (HRMS) 光谱和 X 射线衍射分析建立的。图形概要