Electrochemical
<scp>Palladium‐Catalyzed</scp>
Intramolecular C—H Amination of
<scp>2‐Amidobiaryls</scp>
for Synthesis of Carbazoles
作者:Qingqing Wang、Xiaojing Zhang、Pan Wang、Xinlong Gao、Heng Zhang、Aiwen Lei
DOI:10.1002/cjoc.202000407
日期:2021.1
The synthesis of carbazoles based on the electrochemical Pd‐catalyzed intramolecularC—H amination of 2‐amidobiaryls through oxidative cross coupling has been achieved under mild reaction conditions. The reaction can be carried out in undivided cell without the addition of external chemical oxidant. Besides good functional group compatibility, the desired carbazoles can be scaled up and modified easily
Palladium‐Catalyzed Synthesis of Carbazoles by Perester
作者:Li He、Yongjun Xu
DOI:10.1002/adsc.202200419
日期:2022.7.19
An intramolecular C−H amination for the synthesis of carbazoles with a Pd(II)/TBPB system has been developed. This catalytic amination process forms the carbazole products in good to excellent yields. It is noteworthy that this method implied the advantages of the catalytic mode involving perester with transition metal catalyst in the activation of inert C−H bonds. In addition, the transformation performs
involving sequential nucleophilic and electrophilic C–Nbondformations. Herein, we report a novel Suzuki reaction/C–Hactivation/amination sequence for building a myriad of carbazoles in a single transformation using bifunctional secondary hydroxylamines. It is noteworthy that the synthetic utility of this methodology is highlighted by the total synthesis of clausine V and glycoborine by incorporating
Pd-Catalyzed Intramolecular Oxidative C–H Amination: Synthesis of Carbazoles
作者:So Won Youn、Joon Hyung Bihn、Byung Seok Kim
DOI:10.1021/ol201416u
日期:2011.7.15
A Pd-catalyzed oxidative C-H amination of N-Ts-2-arylanilines under ambient temperature using Ozone as an inexpensive, safe, and easy-to-handle oxidant has been developed. This process represents a green and practical method for the facile construction of carbazoles with a broad substrate scope and wide functional group tolerance.