Rhodium-Catalyzed Interconversion of Quinolinyl Ketones with Boronic Acids via C–C Bond Activation
作者:Joseph M. Dennis、Chad T. Compagner、Stanna K. Dorn、Jeffrey B. Johnson
DOI:10.1021/acs.orglett.6b01434
日期:2016.7.15
A rhodium-catalyzed cross-coupling of aryl and aliphatic quinolinyl ketones with boronicacids has been developed. Proceeding via quinoline-directed carbon–carbon σ bond activation, the transformation demonstrates tolerance of a range of functional groups on both the ketone and arylboronicacid substrates, providing good to excellent yields of the new ketones, particularly those containing electron-withdrawing
已经开发出铑催化的芳基和脂族喹啉基酮与硼酸的交叉偶联。通过喹啉定向的碳-碳σ键激活,转化表明酮和芳基硼酸底物上的一系列官能团均具有耐受性,从而使新酮,特别是含有吸电子取代基的酮,具有良好至极佳的收率。催化剂的反应性取决于喹啉基酮底物,烷基酮需要Rh(PPh 3)3 Cl而不是更具反应性的[Rh(C 2 H 4)2 Cl] 2。使用K 2 CO 3 作为添加剂,甲基硼酸也是有效的底物,从而产生了前所未有的甲基化技术。
Rhodium(III)-Catalyzed Direct Coupling of Quinoline-8-Carbaldehydes with (Het)Arylboronic Acids for the Synthesis of 8-Aryloylquinolines
作者:Xue-Li Lyu、Shi-Sheng Huang、Yuan-Qiong Huang、Yong-Qiang Li、Hong-Jian Song、Yu-Xiu Liu、Qing-Min Wang
DOI:10.1021/acs.joc.0c01490
日期:2020.8.7
Herein, we describe a method for the synthesis of aryl-(het)aryl ketones by Rh(III)-catalyzed direct coupling between quinoline-8-carbaldehydes and (het)arylboronic acids. The method has a broad substrate scope, a high functional group tolerance, and uses commercially available starting materials. Scale-up of the reaction and subsequent synthesis of tubulin polymerization inhibitor demonstrated its