Catalytic Formation of Ketones from Unactivated Esters through Rhodium Chelation-Assisted C–O Bond Activation
作者:Jingjing Wang、Sujing Zuo、Weiqiang Chen、Xinrui Zhang、Kaixin Tan、Yun Tian、Jianhui Wang
DOI:10.1021/jo400949p
日期:2013.9.6
A new method for building aryl aryl ketones containing heterocyclic rings through chelation-assisted C–O bond activation catalyzed by a rhodium complex has been developed. In this reaction, methyl quinoline-8-carboxylate, methyl quinoxaline-5-carboxylate, and their derivatives were reacted with an excess amount of a substituted phenyl boronic acid in the presence of a rhodium(I) complex to give substituted
Direct Exchange of a Ketone Methyl or Aryl Group to Another Aryl Group through CC Bond Activation Assisted by Rhodium Chelation
作者:Jingjing Wang、Weiqiang Chen、Sujing Zuo、Lu Liu、Xinrui Zhang、Jianhui Wang
DOI:10.1002/anie.201206693
日期:2012.12.3
Swapped: Commercially available quinolinone derivatives (1 or 2, see scheme) were reacted with arylboronic acids in the presence of a RhI complex to give aryl(quinolin‐8‐yl)methanone products 3 in medium to good yields. A mechanism that involves the in situ oxidation of RhI to RhIII by O2 in the presence of CuI was proposed.
arylation of quinoline-8-carbaldehydes with either aryl iodides or aryl diazonium salts for the synthesis of aryl quinolinyl ketones. Aryl iodide substituted with an electron-donating group favors the reaction, whereas aryl diazonium salt substituted with an electron-withdrawing group showed excellent reactivity. A range of aryl quinolinyl ketones were synthesized in good-to-excellent yields, with very good
Pd(II)-Catalyzed Arylation/Oxidation of Benzylic C–H of 8-Methylquinolines: Access to 8-Benzoylquinolines
作者:Wenrong Wang、Xiaoqing Fu、Yuchen Cai、Li Cheng、Changsheng Yao、Xiangshan Wang、Tuan-Jie Li
DOI:10.1021/acs.joc.1c01958
日期:2021.11.5
Oxidative coupling of Michael acceptors with aryl nucleophiles produced through rhodium-catalyzed C–C bond activation
作者:Caroline E. Gregerson、Kathryn N. Trentadue、Erik J. T. Phipps、Janelle K. Kirsch、Katherine M. Reed、Gabriella D. Dyke、Jacob H. Jansen、Christian B. Otteman、Jessica L. Stachowski、Jeffrey B. Johnson
DOI:10.1039/c7ob01212h
日期:——
successfully undergo oxidative coupling with Michael acceptors. The reaction scope encompasses a broad range of nucleophiles generated from quinolinyl ketones as well as a series of electron deficient terminal alkenes, illustrating the broad potential of intersecting carbon–carbon bond activation with synthetically useful coupling methodologies. The demonstrated oxidative coupling produces a range of cinnamyl