Rhodium-Catalyzed Synthesis of Diaryl Sulfides Using Aryl Fluorides and Sulfur/Organopolysulfides
作者:Mieko Arisawa、Takuya Ichikawa、Masahiko Yamaguchi
DOI:10.1021/ol302497m
日期:2012.10.19
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
取代pentafluorobenzenes与硫反应以得到在RhH的存在双(4-取代的2,3,5,6-四氟苯基)硫化物(PPH 3)4,1,2-双(二苯基膦基)苯(dppBz),和三丁基。反应在室温至80°C之间有效进行。对有机三硫化物和四硫化物的反应性进行的比较研究显示出显着的底物特异性。二-叔-丁基四硫化物具有反应性的芳基一氟化物和取代pentafluorobenzenes反应。二-叔丁基三硫化物与芳基一氟化物反应。根据S–S键能的差异解释了反应性。