Transition-Metal-Free, Potassium tert-butoxide-mediated Direct Synthesis of Symmetrical Diaryldichalcogenides from Aryl Halides

Document Type : Research Article


1 Department of Chemistry, Ilam University, Ilam, I.R. IRAN

2 Department of Chemistry, Basic of Sciences Faculty, Ilam University, PO Box 69315-516, Ilam, Iran


In continuation of our efforts on the synthesis of diaryl disulfide compounds using coupling reactions and try to finding efficient, simple, and general methods for the direct synthesis of C-X (S, Se, Te)  bonds,  In this work,  for the first time a transition-metal-free synthesis of diaryl dichalcogenides has been reported. Potassium t-Butoxide can efficiently promote the coupling reaction of aryl halides (and-OTS) with elemental S, Se, and Te powder in DMSO without the aid of transition metal catalysts. Under the optimal conditions, a series of symmetrical diaryldisulfide, diaryldiselenide, and diarylditelluride were obtained in good to excellent yield.


Main Subjects

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