One-pot synthesis of 3-haloflavones from flavones using Oxone® and potassium halide as a halogenation reagent
作者:Tao Peng、Gang Wang、Shouguo Zhang、Yunbo Sun、Shuchen Liu、Lin Wang
DOI:10.1016/j.tetlet.2019.151511
日期:2020.2
A two-step, one-pot method has been developed for the synthesis of 3-haloflavones from the corresponding flavones. The method uses Oxone® and potassium halide to produce the active molecular halogen in situ. The solvent (methanol) then participates in the reaction to afford the 2-methoxy-3-haloflavanone derivative. After adding sodium hydroxide, the corresponding 3-haloflavone product is obtained in
已经开发了一种两步一锅法,用于从相应的黄酮合成3-卤代黄酮。该方法使用Oxone®和卤化钾原位生成活性分子卤素。然后,溶剂(甲醇)参与反应,得到2-甲氧基-3-卤代黄烷酮衍生物。加入氢氧化钠后,以良好至优异的产率获得相应的3-卤黄酮产物。该方法提供了从相同的黄酮起始原料方便地合成3-氯,3-溴和3-碘黄酮的方法。