作者:Changbin Xiang、Tingting Li、Jie Yan
DOI:10.1080/00397911.2013.834364
日期:2014.3.4
convenient method for preparation of isoxazolines was developed by a catalytic cycloaddition of nitrile oxides generated in situ from aldoximes to alkenes in the presence of a catalytic amount of iodobenzene. In this protocol, iodobenzene was first oxidized into the hypervalent iodine intermediate by m-chloroperbenzoic acid, which then transformed aldoximes into nitrile oxides, and a 1,3-dipolar cycloaddition
摘要 通过在催化量的碘苯存在下,将醛肟原位生成的腈氧化物催化环加成反应,开发了一种新的、方便的制备异恶唑啉的方法。在该协议中,碘苯首先被间氯过苯甲酸氧化成高价碘中间体,然后将醛肟转化为腈氧化物,以及腈氧化物与烯烃的 1,3-偶极环加成反应,以中等至良好的收率提供异恶唑啉。[本文提供补充材料。访问出版商的 Synthetic Communications® 在线版,获取以下免费补充资源:完整的实验和光谱细节。] 图形摘要