A convenient preparation of symmetrical and unsymmetrical 1,2-diketones: application to fluorinated phenytoin synthesis
作者:Philip C. Bulman Page、Andrew E. Graham、B.Kevin Park
DOI:10.1016/s0040-4020(01)88265-x
日期:1992.1
1,2-Diketones are efficiently produced in two steps by reaction of aldehydes with anions derived from 2-substituted dithianes followed by treatment of the resulting alcohols with NBS in aqueous acetone; phenytolin derivatives were prepared from these diketones by a standard method involving treatment with urea and potassium hydroxide under reflux.
通过醛与衍生自2-取代的二噻吩的阴离子反应,然后在丙酮水溶液中用NBS处理所得的醇,可分两步高效生产1,2-二酮。通过标准方法由这些二酮制备苯妥英衍生物,该方法涉及在回流下用尿素和氢氧化钾处理。