The first approach to α-fluorination of aroylacyl imides without a catalyst was accomplished, relying on electrophilic activation through the reaction between a fluoride salt, dimethylsulfoxide and an imide. The synthesis of α-fluorinated aroylacyl imides in good yields was achieved using inexpensive reagents such as NaF and DMSO.
Synthesis of Imides and Benzoylureas by Direct Oxidation of <i>N</i>-methylenes of Amides and Benzylureas
作者:Wenhua Huang、Mei-Li Xu
DOI:10.3184/174751912x13567968693695
日期:2013.2
Some amides and benzylureas can be oxidised to imides and benzoylureas, respectively, using silver(I) nitrate (20 mol %), copper(II) sulfate pentahydrate (20 mol %), ammonium persulfate (3.0 equiv.), and potassium fluoride (20 equiv.) in water at room temperature.