copper-catalyzed C–S or C–Se bond formation between aryl iodides and easily available chalcogen sources leading to diaryl chalcogenides is reported. A variety of symmetrical diaryl sulfides and diaryl selenides were synthesized in good to excellent yields. Unsymmetrical diaryl sulfides were also obtained in moderate yields from two different aryl iodides by a one-pot tandem process. This strategy was
Cu-Mediated arylselenylation of aryl halides with trifluoromethyl aryl selenonium ylides
作者:Shuai Wu、Jin Shi、Cheng-Pan Zhang
DOI:10.1039/c9ob01506j
日期:——
An unprecedented arylselenylation of aryl halides with trifluoromethyl aryl selenonium ylides in the presence of copper is described. The reaction proceeded at 100–140 °C under ligand- and additive-free conditions for 3–20 h to form a variety of unsymmetrical diaryl selenides in good to high yields. Arylselenylation is easy to operate, has good functional group tolerance, and demonstrates the different