Hypervalent Iodine Catalyzed Generation of Nitrile Oxides from Oximes and their Cycloaddition with Alkenes or Alkynes
作者:Akira Yoshimura、Kyle R. Middleton、Anthony D. Todora、Brent J. Kastern、Steven R. Koski、Andrey V. Maskaev、Viktor V. Zhdankin
DOI:10.1021/ol401815n
日期:2013.8.2
Hypervalent iodine catalyzed oxidation of aldoximes using oxone as a terminal oxidant generates nitrile oxides, which react with alkenes and alkynes to give the corresponding isoxazolines and isoxazoles in moderate to good yields. This reaction involves active hypervalent iodine species formed in situ from catalytic iodoarene and oxone in the presence of hexafluoroisopropanol in aqueous methanol solution
使用恶酮作为末端氧化剂,高价碘催化醛肟的氧化生成腈氧化物,该腈氧化物与烯烃和炔烃反应生成相应的异恶唑啉和异恶唑,产率中等至良好。该反应涉及在甲醇水溶液中在六氟异丙醇存在下由催化的碘芳烃和氧酮原位形成的活性高价碘物质。