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.
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