Electrochemical Cobalt-Catalyzed C–H Oxygenation at Room Temperature
作者:Nicolas Sauermann、Tjark H. Meyer、Cong Tian、Lutz Ackermann
DOI:10.1021/jacs.7b11025
日期:2017.12.27
Electrochemical cobalt-catalyzed C–H functionalizations were achieved in terms of C–H oxygenation under mild conditions at 23 °C. The robust electrochemical C–H functionalization was characterized by ample substrate scope, whereas mechanistic studies provided support for a facile C–H cleavage. The electrochemical cobalt-catalyzed C–H oxygenation proved viable on arenes and alkenes with excellent levels
Electrochemical C−H Amination by Cobalt Catalysis in a Renewable Solvent
作者:Nicolas Sauermann、Ruhuai Mei、Lutz Ackermann
DOI:10.1002/anie.201802206
日期:2018.4.23
coupling chemistry with prefunctionalized aryl electrophiles. While oxidative aminations have emerged as powerful alternatives, they largely produce undesired metal‐containing by‐products in stoichiometric quantities. In contrast, described herein is the unprecedented electrochemicalC−Hamination by cobalt‐catalyzed C−H activation. The environmentally benign electrocatalysis avoids stoichiometric
Copper-Mediated Direct Aryloxylation of Benzamides Assisted by an <i>N</i>,<i>O</i>-Bidentate Directing Group
作者:Xin-Qi Hao、Li-Juan Chen、Baozeng Ren、Liu-Yan Li、Xin-Yan Yang、Jun-Fang Gong、Jun-Long Niu、Mao-Ping Song
DOI:10.1021/ol500166d
日期:2014.2.21
Copper-mediated selective mono- or diaryloxylation of benzamides has been achieved by using 2-aminopyridine 1-oxide as a new and removable N,O-bidentate directing group. The reaction system shows a broad substrate scope and provides a straightforward way for the synthesis of mono- and diaryloxylated benzoic acids.