An cascade intramolecular 5‐exo‐dig cyclization of N‐(2‐iodophenyl)propiolamides and sequential amination/etherification (with N‐hydroxybenzamides, phenyl hydroxycarbamate) protocol for the synthesis of amino‐ and phenoxy‐substituted 3‐methyleneindolinones using unexpensive Pd(PPh3)4 as catalyst has been developed. The protocol enables the assembly of structurally important oxindole cores featuring
N-(2-
碘代苯基)丙酰胺的级联分子内5 -exo-dig环化反应和顺序胺化/醚化(与N-羟基苯甲酰胺,苯基羟基
氨基甲酸酯)方案,使用廉价的Pd(已经开发了作为催化剂的PPh 3)4。该协议使具有重要官能团耐受性(特别是卤素基团)的结构重要的羟
吲哚核的组装成为可能,从而提供了具有各种取代基的多种产品,收率良好至极佳。