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A method for selective synthesis of symmetric sulfides or disulfides from the reaction of aryl halides with
KSCN by solvent exchange is introduced. Aryl halides were selectively converted to the symmetric
disulfides or sulfides in high yields when they are treated with KSCN in the presence of NiCl2$6H2O and
DMAP at 140 C in DMF or poly ethylene glycol (PEG-200) respectively.
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