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
Mild C−H Alkoxylation of Aromatic Amides Catalyzed by Salicylaldehyde‐Co(II) Complexes
作者:Xiao‐Hong Chen、Yi‐Qing Xu、Mao‐Gui Huang、Yu‐Yan Tan、Yu‐Han Li、Jia‐Wei Li、Yue‐Jin Liu
DOI:10.1002/ejoc.202400546
日期:——
A simple and efficient salicylaldehyde‐promoted cobalt‐catalyzed protocol for the C‐H alkoxylation of aromatic amides by employing primary alcohols as the coupling partner has been developed. This method utilizes a 8‐aminoquinoline moiety as the directing group and successfully achieves the ortho‐C‐H alkoxylation in moderate to good yields under mild conditions. This protocol features excellent functional tolerance and broad substrate scope including natural product. In addition, the directing group could be easily removed as well.