Highly Regioselective Copper-Catalyzed Benzylic CH Amination by N-Fluorobenzenesulfonimide
作者:Zhikun Ni、Qian Zhang、Tao Xiong、Yiying Zheng、Yan Li、Hongwei Zhang、Jingping Zhang、Qun Liu
DOI:10.1002/anie.201107427
日期:2012.1.27
Primary target: A practical and effective copper‐catalyzed amination strategy for synthesizing various benzylic amines from benzylic hydrocarbons is described (see scheme; DCE=1,2‐dichloroethane). Xylene substrates can undergo diamination reactions using this method. The remarkable preference for primary over secondary benzylic CHbonds has been observed for the first time.
Ligand-free iron-catalyzed benzylic C (sp<sup>3</sup>)–H amination of methylarenes with <i>N</i>-fluorobenzenesulfonimide
作者:Fengyu Bao、Yuanbo Cao、Wenbo Liu、Junhao Zhu
DOI:10.1039/c9ra05294a
日期:——
Direct conversion of cheap methylarenes to benzylic amines, which are essential structural units of important drugs, is of great significance. However, the known methodologies suffer from the requirement of noble metal catalysts, heavy metal residues or strong oxidants. Herein, the first biocompatible iron-catalyzed benzylic C (sp3)–H amination of methylarenes with N-fluorobenzenesulfonimide is described
将廉价的甲基芳烃直接转化为重要药物的基本结构单元苄胺具有重要意义。然而,已知的方法需要贵金属催化剂、重金属残留物或强氧化剂。本文描述了第一个生物相容的铁催化苄基 C (sp 3 )-H 胺化甲基芳烃与N-氟苯磺酰亚胺。带有给电子基团和吸电子基团的甲基芳烃的反应在配体和额外的无氧化剂条件下顺利进行。甲苯衍生物和 8-甲基喹啉都可以用相同的铁催化剂胺化。
molecules. Because arylacetic acids are regarded as key structures in bioactive compounds, new transformations of these structures could contribute to drug/agrochemical discovery and chemical biology. This work reports carbon–nitrogen and carbon–oxygen bond formation through the photoredox‐catalyzed decarboxylation of arylacetic acids. The reaction shows good functional group compatibility without pre‐activation