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 diaryl disulfides or aryl thiols 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–H bond and C–F bond activation. When 1,10-phenanthroline·H2O and DDQ were added to the above system
使用 CuBr 作为催化剂,tBuOLi 或 tBuOK 作为碱在 DMSO 中,在 60 °C 和 O2 气氛下,Cu 催化二芳基二硫化物或芳基硫醇与五氟苯的交叉偶联反应。通过 C-H 键和 C-F 键活化,以中等至良好的产率获得了相应的双芳基硫醇化产物。当1,10-菲咯啉·H2O和DDQ加入到上述体系中时,可以以中等产率分离出有/没有双芳基硫代产物的单芳基硫代产物。给出了这些转换的合理机制。因此,它代表了一种通过 C-H 键和 C-F 键活化合成多氟二芳基硫化物和多氟三芳基二硫化物的方法。