Palladium-Catalyzed Intermolecular Oxidative Diazidation of Alkenes
作者:Haihui Peng、Zheliang Yuan、Pinhong Chen、Guosheng Liu
DOI:10.1002/cjoc.201600834
日期:2017.6
A palladium‐catalyzedoxidative vicinal diazidation of alkenes has been developed, in which TMSN3 was used as azide source. Both styrenes and unactivated alkenes are suitable for this reaction. And trans‐alkyldiazides were obtained as major products from cyclic alkenes with moderate to good diastereoselectivities. This reaction afforded an efficient way for the synthesis of useful 1,2‐diamines after
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。
作者:Álvaro Iglesias、Rosana Álvarez、Ángel R. de Lera、Kilian Muñiz
DOI:10.1002/anie.201108351
日期:2012.2.27
Dual capacity: A new palladium‐catalyzed intermolecular sequence consisting of the CH activation and amidation of methyl groups relies on N‐fluorobis(phenylsulfonyl)imide (NFSI) as both the oxidant and the nitrogen source. The reaction provides the corresponding arylamines as bissulfonimides along with HF as the only by‐product. Both experimental and computational results suggest the involvement of