Substituted pentafluorobenzenes react with sulfur to give bis(4-substituted 2,3,5,6-tetrafluorophenyl) sulfides in the presence of RhH(PPh3)4, 1,2-bis(diphenylphosphino)benzene (dppBz), and tributylsilane. The reaction proceeds efficiently between room temperature and 80 °C. A comparative study of the reactivities of an organic trisulfide and a tetrasulfide showed notable substrate specificity. Di-tert-butyl
Aromatic polyfluoro-compounds—LIII reactions of polyflouroarenes with thioureas
作者:P.L. Coe、E. Milner、J.C. Tatlow、R.T. Wragg
DOI:10.1016/0040-4020(72)80060-7
日期:1972.1
Thioureas react with activated arylfluoroides to give the corresponding diaryl sulphides. Octafluorotoluene, pentafluoronitrobenzene and 2,3,4,5-tetrafluoronitrobenzene afforded diaryl sulphides substituted para to the activating groups in good yield, whilst decafluoro-o-xylene, with two molecules of thiourea, gave 1,4,6,9-tetrafluoro-2,3,7,8-tetrakis(trifluoromethyl)thianthren. No reaction was observed