Quaternary ammonium salt mediated highly regioselective ring opening of aziridines with zinc(II) halides to racemic and non-racemic β-halo amines in excellent yield and selectivity is described. The reaction proceeds via an SN2-type pathway and the partial racemization of the starting substrate and the product was effectively controlled by using quaternary ammonium salts to afford the enantioenriched products (er up to 95:5).
描述了一种四级
铵盐介导的与
锌(II)卤化物反应的高度区域选择性环开裂,能够将氮杂环烯转化为种类丰富且不种类丰富的β-卤胺,并且具有优异的产率和选择性。该反应采用SN2类型的途径进行,通过使用四级
铵盐有效控制起始底物和产品的部分消旋,获得富含对映体的产物(对映体过量可达到95:5)。