Copper-Catalyzed Amino Lactonization and Amino Oxygenation of Alkenes Using <i>O</i>-Benzoylhydroxylamines
作者:Brett N. Hemric、Kun Shen、Qiu Wang
DOI:10.1021/jacs.6b02840
日期:2016.5.11
A copper-catalyzed amino lactonization of unsaturated carboxylic acids has been achieved as well as the analogous intermolecular three-component amino oxygenation of olefins. The transformation features mild conditions and a remarkably broad substrate scope, offering a novel and efficient approach to construct a wide range of amino lactones as well as 1,2-amino alcohol derivatives. Mechanistic studies
Site-Selective Copper-Catalyzed Amination and Azidation of Arenes and Heteroarenes via Deprotonative Zincation
作者:Charles E. Hendrick、Katie J. Bitting、Seoyoung Cho、Qiu Wang
DOI:10.1021/jacs.7b07661
日期:2017.8.23
effective for a wide range of arenes, including nonactivated arenes bearing simple functionalities such as fluoride, chloride, ester, amide, ether, nitrile, and trifluoromethyl groups as well as heteroarenes including indole, thiophene, pyridine, and isoquinoline. An analogous C-H azidation is also accomplished using azidoiodinane for direct introduction of a useful azide group onto a broad scope of arenes
Copper-Catalyzed Aminoheteroarylation of Unactivated Alkenes through Distal Heteroaryl Migration
作者:Yungeun Kwon、Wei Zhang、Qiu Wang
DOI:10.1021/acscatal.1c01001
日期:2021.7.16
We report a copper-catalyzed aminoheteroarylation of unactivatedalkenes to access valuable heteroarylethylamine motif. The developed reaction features a copper-catalyzed intermolecular electrophilic amination of the alkenes followed by a migratory heteroarylation. The method applies to alcohol-, amide-, and ether-containing alkenes, overcoming the common requirement of a hydroxyl motif in previous
Copper-Catalyzed <i>ortho</i>-Selective Dearomative C–N Coupling of Simple Phenols with <i>O</i>-Benzoylhydroxylamines
作者:Zhi-Li Yao、Lei Wang、Nan-Qi Shao、Yin-Long Guo、Dong-Hui Wang
DOI:10.1021/acscatal.9b01317
日期:2019.8.2
exclusively at the positionortho to the hydroxyl group, providing a convenient method to synthesize the desired products in high yields. The reaction proceeds under mild conditions and tolerates a wide range of functional groups. Mechanistic studies indicate that this transformation proceeds via either (1) a single-electrontransfer process involving attack of an N-centered radical onto the phenol or
Copper-Catalyzed α-Amination of Phosphonates and Phosphine Oxides: A Direct Approach to α-Amino Phosphonic Acids and Derivatives
作者:Stacey L. McDonald、Qiu Wang
DOI:10.1002/anie.201308890
日期:2014.2.10
A direct approach to important α‐amino phosphonic acids and its derivatives has been developed by using copper‐catalyzed electrophilic amination of α‐phosphonate zincates with O‐acyl hydroxylamines. This amination provides the first example of CN bond formation which directly introduces acyclic and cyclic amines to the α‐position of phosphonates in one step. The reaction is readily promoted at room