Cobalt‐catalyzed C−H amination of arenes with alkylamines by the assistance of 8‐aminoquinoline as auxiliary through sp2 C−H bond functionalization has been achieved. Attractive features of this protocol include the low loading of the cobalt catalyst and the readily available reagents.
C–H Amidation and Amination of Arenes and Heteroarenes with Amide and Amine using Cu-MnO as a Reusable Catalyst under Mild Conditions
作者:Harshvardhan Singh、Chiranjit Sen、Eringathodi Suresh、Asit B. Panda、Subhash C. Ghosh
DOI:10.1021/acs.joc.0c02603
日期:2021.2.19
An atom-economical and efficient route for the direct amidation and amination of aryl C–H bonds using our synthesized recyclable heterogeneous Cu-MnO catalyst is reported here. The direct C–Hamidation was carried out using a simple amide without any preactivated coupling partner, and simple air was used as the sole oxidant. The reaction proceeds very smoothly with a broad range of substrates containing
Copper-Catalyzed Intermolecular C(sp<sup>2</sup>)–H Amination with Electrophilic <i>O</i>-Benzoyl Hydroxylamines
作者:Wei-Hao Rao、Qi Li、Li-Li Jiang、Xue-Wan Deng、Pan Xu、Fang-Yuan Chen、Ming Li、Guo-Dong Zou
DOI:10.1021/acs.joc.1c01229
日期:2021.8.6
A copper-catalyzed intermolecular electrophilic amination of benzamides with O-benzoyl hydroxylamines was achieved with the assistance of an 8-aminoquinolyl group. With this protocol, good compatibility was observed for a variety of aryl amides and heteroaryl amides, and excellent tolerance with various functional groups was achieved. Significantly, the monoaminated product was overwhelmingly delivered
A General Method for Aminoquinoline-Directed, Copper-Catalyzed sp<sup>2</sup> C–H Bond Amination
作者:James Roane、Olafs Daugulis
DOI:10.1021/jacs.6b01117
日期:2016.4.6
method for copper-catalyzed, aminoquinoline-assisted amination of β-C(sp(2))-H bonds of benzoic acid derivatives is reported. The reaction employs Cu(OAc)2 or (CuOH)2CO3 catalysts, an amine coupling partner, and oxygen from air as a terminal oxidant. Exceptionally high generality with respect to amine coupling partners is observed. Specifically, primary and secondary aliphatic and aromatic amines, heterocycles
Nickel‐Catalyzed Electrooxidative C−H Amination: Support for Nickel(IV)
作者:Shou‐Kun Zhang、Ramesh C. Samanta、Nicolas Sauermann、Lutz Ackermann
DOI:10.1002/chem.201805441
日期:2018.12.20
Nickel‐catalyzed electrochemical C−H aminations were accomplished by chemo‐ and position‐selective C−H activation with ample scope. Detailed mechanistic studies highlighted a facile C−H cleavage with unique chemo‐selectivity, while cyclovoltammetric analysis provided support for a nickel(II/III/IV) manifold.
镍催化的电化学CH氨基化反应是通过化学和位置选择性CH活化而实现的。详细的机械研究强调了具有独特的化学选择性的C H裂解,而循环伏安分析则为镍(II / III / IV)歧管提供了支持。