Zinc‐Catalysed N‐Iodosuccinimide‐Enabled Selective N2‐Olefination of Benzotriazoles with Alkenes
作者:Lili Zhu、Lifang Tian、Hui Zhang、Lina Xiao、Wen Luo、Bin Cai、Haifeng Wang、Chunjie Wang、Guanglu Liu、Chaoyu Pei、Yahui Wang
DOI:10.1002/adsc.201801303
日期:——
Herein, we describe a zinc‐catalysed N2‐selective olefination of benzotriazoles with unactivated alkenes and styrenes. The transformation is achieved by a N‐iodosuccinimide (NIS)‐mediated two‐step, one‐pot approach, proceeding through sequential regioselective β‐iodoalkylation of benzotriazoles with alkenes and a subsequent base‐promoted 1,2‐elimination. The N2‐selective β‐iodoalkylation of benzotriazoles
在本文中,我们描述了苯并三唑与未活化的烯烃和苯乙烯的锌催化N 2选择性烯化反应。该转化是通过N碘代琥珀酰亚胺(NIS)介导的两步一锅法完成的,该方法通过依次进行苯并三唑与烯烃的区域选择性β碘烷基化和随后的碱促进的1,2消除。苯并三唑的N 2选择性β碘烷基化具有高度立体定向性,可在非常简单温和的条件下发挥作用,表现出出色的官能团耐受性。N 2的高选择性归因于N之间的分子间氢键碘代琥珀酰亚胺和苯并三唑的1位上的NH氢键供体。这种可扩展的过程,作为结构多样的N 2烯烃化苯并三唑的模块化组装的有效方法,将极大地促进苯并三唑的N 2功能化的化学反应。