Synthesis of Anthranilic Acid Derivatives through Iron-Catalyzed Ortho Amination of Aromatic Carboxamides with N-Chloroamines
摘要:
Arenes possessing an 8-quinolinylamide group as a directing group are ortho aminated with N-chloroamines and N-benzoyloxyamines in the presence of an iron/diphosphine catalyst and an organometallic base to produce anthranilic acid derivatives in high yield. The reaction proceeds via iron-catalyzed C H activation, followed by the reaction of the resulting iron intermediate with N-chloroamine. The choice of the directing group and diphosphine ligand is crucial for obtaining the anthranilic acid derivative with high yield and product selectivity.
Preparation of Polyfunctional Tertiary Amines via the Electrophilic Amination of Arylmagnesium Compounds Using <i>N</i>-Chloroamines
作者:Paul Knochel、Pradipta Sinha
DOI:10.1055/s-2006-951560
日期:——
Functionalized arylmagnesium compounds prepared via a halogen-magnesium exchange reaction using aryl iodides or bromides and i-PrMgCl·LiCl, react rapidly with benzyl-N-chloroamines at -45 °C providing polyfunctional tertiary amines in good yields. The methodology is also successfully applied to the preparation ofchiral N-chloroamines with retention ofchirality.
通过使用芳基碘化物或溴化物和 i-PrMgCl·LiCl 的卤素-镁交换反应制备的官能化芳基镁化合物在 -45 °C 下与苄基-N-氯胺快速反应,以良好的收率提供多官能叔胺。该方法还成功地应用于制备手性保留的手性N-氯胺。