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 boronic acids 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 aryl boronic acid 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。