Copper-Catalyzed Cascade Cyclization Reaction of 2-Haloaryltriazenes and Sodium Azide: Selective Synthesis of 2 <i>H</i>-Benzotriazoles in Water
作者:Xiaobo Shang、Shixian Zhao、Wanzhi Chen、Chao Chen、Huayu Qiu
DOI:10.1002/chem.201303712
日期:2014.2.10
A new approach to the synthesis of 2 H‐benzotriazoles is described. This strategy is based on the copper‐catalyzed CN coupling of 2‐haloaryltriazenes or 2‐haloazo compounds with sodium azide and the intramolecular addition of nitrene to NN bonds. This approach allows the synthesis of various N‐amino‐ and N‐aryl‐2 H‐benzotriazoles in water, in good to excellent yields. The procedure is simple and
描述了一种合成2 H-苯并三唑的新方法 。这种策略是基于铜催化Ç N中的2- haloaryltriazenes或用叠氮化钠和分子内加成氮宾的至NN键2- haloazo化合物偶合。这种方法可以在水中合成各种N-氨基和N-芳基2 H-苯并三唑,产率高至优异。该过程很简单,原料和催化剂容易获得,为2位取代的苯并三唑的合成提供了实用而便捷的途径。