Copper-catalyzed bis-arylations of alkenes leading to oxindole derivatives
作者:Liangliang Shi、Yuyuan Wang、Haijun Yang、Hua Fu
DOI:10.1039/c4ob00576g
日期:——
A simple and practical copper-catalyzed approach to oxindole derivatives by copper-catalyzed bis-arylation of N-alkyl-N-phenylacrylamides with diaryliodonium triflates has been developed under mild conditions, and the method is of tolerance towards some functional groups in the substrates.
Electrochemical cobalt-catalyzed C–H or N–H oxidation: a facile route to synthesis of substituted oxindoles
作者:Yue Yu、Peifeng Zheng、Yuanheng Wu、Xiaoyi Ye
DOI:10.1039/c8ob02485e
日期:——
Two comparable protocols for the electrochemical cobalt-catalyzed C–H/N–H oxidation have been exploited for the synthesis of substituted oxindoles via radical pathways. The electrochemical cobalt-catalyzed system was demonstrated to be efficient and eco-friendly and avoided the use of stoichiometric oxidants to afford the arylation or alkylation products in good yields at room temperature.
Synthesis of 3,3-Disubstituted Oxindoles by Visible-Light-Mediated Radical Reactions of Aryl Diazonium Salts with N-Arylacrylamides
作者:Weijun Fu、Fengjuan Xu、Yuqin Fu、Mei Zhu、Jiaqi Yu、Chen Xu、Dapeng Zou
DOI:10.1021/jo401894b
日期:2013.12.6
A mild and efficient visible-light-mediated diarylation of N-arylacrylamides with aryl diazonium salts under mild conditions has been developed. This method provides convenient access to a variety of useful 3,3-disubstituted oxindoles by constructing two C-C bonds in one step.
<i>Endo</i>/<i>Exo</i>-Controllable Photocyclization by EnT-SET-Switch
作者:Xian-Peng Cai、Bin-Hong Han、Fu-Tong Cen、Jian-Ping Qu、Yan-Biao Kang
DOI:10.1021/acs.orglett.3c00837
日期:2023.4.28
CBZ6, a redox-neutral non-donor–acceptor-type organo-photocatalyst, presents a strong reductive potential with an oxidative potential of −2.16 V (vs SCE). It can work as a photosensitizer for both single-electron transfer and triplet energy transfer processes. This feature enables site-selective control in the intramolecular hydroarylation of acrylamides. Both 5-exo-trig and 6-endo-trig cyclization