A facile route for direct access to the 4-iodopyrrole-2-carbaldehydes from pyridinium salts has been successfully developed, which undergoes cascade pyrrole-2-carbaldehydes construction/selective C4 position iodination process. Using Na2S2O8 as an oxidant and readily available sodium iodide as an iodine source, a variety of 4-iodopyrrole-2-carbaldehydes were obtained in good to excellent yields. Atom-
已经成功开发了一种从吡啶盐直接获得 4-碘吡咯-2-甲醛的简便途径,该途径经历了级联吡咯-2-甲醛构建/选择性 C4 位碘化过程。使用 Na 2 S 2 O 8作为氧化剂和容易获得的碘化钠作为碘源,以良好到极好的收率获得了多种 4-iodopyrrole-2-carbaldehyde。原子经济和步骤经济、良好的官能团耐受性、高区域选择性以及温和的条件使这种转变成为丰富吡咯类库的替代策略。