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
The thiolation of pentafluorobenzene with disulfides by C–H, C–F bond activation and C–S bond formation
作者:Zijian Liu、Kunbing Ouyang、Nianfa Yang
DOI:10.1039/c7ob02836a
日期:——
A metal-free thiolation reaction between pentafluorobenzene and disulfides by C–H, C–F bond activation and C–S bond formation is reported. Bisthiolated tetrafluorobenzene derivatives would be prepared in moderate to good yields from pentafluorobenzene and disulfides under mild conditions. A possible mechanism for the reaction was given.
Rhodium-catalyzed interconversion between acid fluorides and thioesters controlled using heteroatom acceptors
作者:Mieko Arisawa、Toru Yamada、Masahiko Yamaguchi
DOI:10.1016/j.tetlet.2010.09.009
日期:2010.11
A rhodium complex catalyzed the equilibrium acyl transfer reaction between acid fluorides and thioesters. In the presence of fluoride or thiolate acceptors, the reaction could be shifted to either product. RhH(PPh3)(4)-dppe catalyzed the reaction of acid fluorides and diorgano disulfides in the presence of triphenylphosphine giving thioesters, which was accompanied by triphenylphosphine difluoride. The same complex catalyzed the reaction of aryl thioesters and hexafluorobenzene giving acid fluorides, which was accompanied by 1,4-di(arylthio)-2,3,5,6-tetrafluorobenzenes. (C) 2010 Published by Elsevier Ltd.
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