Diazo compounds play an important role as a coupling partner in the synthesis of unique π-conjugated 7-azaindole derivatives via rhodium(III)-catalyzed double C–H activation/cyclization.
to 7-azaindoles is described with disulfides and diselenides under air. The thioether can be readily oxidized to sulfoxide and sulfone. The use of less expensive Ru-catalysis, substrate scope and scale-up are the important practical features. Graphical AbstractRu-catalyzed ortho-selective C-H coupling of arenes tethered to 7-azaindoles with disulfides and diselenides has been accomplished under air.
Rhodium(III)-catalyzed N-directed ortho C–H activation and subsequent roll-over C–H activation represents an important strategy to synthesize fused polycyclic compounds. Herein, the novel methodology broadens the scope of the coupling partner to alkenes, which working smoothly with 7-azaindoles has been proven to be an efficient and atom-economical strategy to access complex π-conjugated 7-azaindole
Rhodium(<scp>iii</scp>)-catalyzed oxidative alkylation of <i>N</i>-aryl-7-azaindoles with cyclopropanols
作者:Jidan Liu、Jinyuan Jiang、Zhenke Yang、Qiaohai Zeng、Jieying Zheng、Siying Zhang、Liyao Zheng、Shang-Shi Zhang、Zhao-Qing Liu
DOI:10.1039/d0ob02323j
日期:——
An efficient Rh(III)-catalyzed C–Hoxidative alkylation of N-aryl-7-azaindoles with cyclopropanols by merging tandemC–H and C–Ccleavage was developed. This transformation features mild reaction conditions, high regioselectivity, and excellent functional group compatibility. The resulting β-aryl ketone derivatives can be readily transformed into 7-azaindole-containing π-extended polycyclic heteroarenes
Cobalt(III)-Catalyzed C–H Amidation of 7-Azaindoles with Dioxazolones: Synthesis of 7-Azaindole Amidated Derivatives
作者:Jun-Shu Sun、Man Liu、Jing Zhang、Lin Dong
DOI:10.1021/acs.joc.8b01354
日期:2018.9.7
An efficient cobalt-catalyzed C–H amidation of 7-azaindoles was developed by using dioxazolones as the amidating reagent. A wide scope of substituted 7-azaindoles, even N-vinly groups, is suitable for the reaction, generating 7-azaindoles derivatives with potential properties up to 91% yield under straightforward and strong applicable reaction conditions.