Synthesis of 2-Oxy-3-(pyridinium-1'-yl)-1,4-naphthoquinone Derivatives by Iodine or Hydrogen Peroxide Oxidation of 1,4-Naphthoquinones in the Presence of Substituted Pyridines
作者:Attilio Citterio、Mariacristina Fochi、Antonietta Maronati、Roberto Sebastiano、Andrea Mele
DOI:10.1055/s-1997-1389
日期:1997.6
2-Oxy-3-(pyridinium-1'-yl)-1,4-naphthoquinone betaines are obtained in moderate to good yield by oxidation of 1,4-naphthoquinones with iodine/MnO2 or hydrogen peroxide in the presence of substituted pyridines. Pyridinium-1,4-naphthoquinone iodides and 2,3-epoxy-2,3-dihydronaphthoquinone are suggested intermediates.
在取代的吡啶存在下,用碘/MnO2 或过氧化氢氧化 1,4-萘醌,可获得 2-氧基-3-(吡啶-1'-基)-1,4-萘醌甜菜碱,收率中等至良好。建议将吡啶-1,4-萘醌碘化物和 2,3-环氧-2,3-二氢萘醌作为中间体。