73242-21-4Relevant academic research and scientific papers
Rhodium-catalyzed substitution reaction of aryl fluorides with disulfides: P-orientation in the polyarylthiolation of polyfluorobenzenes
Arisawa, Mieko,Suzuki, Takaaki,Ishikawa, Tomofumi,Yamaguchi, Masahiko
supporting information; scheme or table, p. 12214 - 12215 (2009/02/04)
In the presence of a catalytic amount of RhH(PPh3)4 and 1,2-bis(diphenylphosphino)benzene, an aromatic fluoride, an organic disulfide (0.5 equiv), and triphenylphosphine (0.5 equiv) reacted in refluxing chlorobenzene to give an aryl sulfide in high yield. Since triphenylphosphine trapped fluoride atoms forming phosphine difluoride, both organothio groups of the disulfide reacted effectively, and the fluoride substituent reacted more readily than the chloride and bromide. The reaction of hexafluorobenzene and a diaryl disulfide gave 1,4-diarylthio-2,3,5,6-tetrafluorobenzene, 1,2,4,5-tetraarylthio-3,6-difluorobenzene, and hexaarylthiobenzene in a stepwise manner; pentafluorobenzene gave 1-arylthio-2,3,5,6-tetrafluorobenzene; 1,2,3,4-tetrafluorobenzene gave 1,2-diarylthio-3,6-difluorobenzene; and 1,2,4,5-tetrafluorobenzene gave 1,4-diarylthio-2-5-difluorobenzene. The polyarylthiolation reaction of polyfluorobenzenes exhibited a strong tendency to form 1,4-difluorobenzenes. Copyright
Process for the preparation of benzophenone thioethers
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, (2008/06/13)
Benzophenone thioethers of the general formula I or Ia STR1 in which X is hydrogen, alkyl, alkoxy or --COO-alkyl and X1 is hydrogen, Cl, Br or --SR, R is an unbranched or branched alkyl radical having 1-20 C atoms, which is unsubstituted or sub
