Expedient synthesis of tetrafluorophenoxthiines and derivatives by copper(I)-catalyzed cross-coupling reaction
作者:Chuanming Yu、Gaobo Hu、Cuiling Zhang、Ran Wu、Haiwei Ye、Guanghui Yang、Xiangjun Shi
DOI:10.1016/j.jfluchem.2013.05.023
日期:2013.9
synthesized from pentafluorobenzene and arylthiols or diaryldisulfides in the presence of copper catalyst and ligand by using O2 as the oxidant, t-BuOLi as the base at 100 °C. The ligand (E)-3-(dimethylamino)-1-(2-hydroxyphenyl)prop-2-en-1-one (L) played an indispensable role in the reaction. This work contains a notable mode of CF bondactivation, which is in the ortho position to the CH bond of pentafluorobenzene
Copper-Catalyzed Direct Thiolation of Pentafluorobenzene with Diaryl Disulfides or Aryl Thiols by C-H and C-F Bond Activation
作者:Chuanming Yu、Cuiling Zhang、Xiangjun Shi
DOI:10.1002/ejoc.201101676
日期:2012.4
A Cu-catalyzed cross-coupling reaction of diaryldisulfides or arylthiols with pentafluorobenzene using CuBr as the catalyst, tBuOLi or tBuOK as the base in DMSO at 60 °C under an O2 atmosphere was investigated. The corresponding bisarylthiolation products were obtained in moderate to good yields by C–Hbond and C–Fbondactivation. When 1,10-phenanthroline·H2O and DDQ were added to the above system
C–H sulfidation or selenation of arenes by a Pd(II)/Cu(II) catalytic system: Preparation of unsymmetrical sulfides or selenides by C–H functionalization has been disclosed. This protocol could be applied a various of arenes. In the case of using an indolizine and pentafluorobenzene, bis‐sulfidated product were obtained.