Simple reaction conditions and recyclable reagents are crucial for environmentally friendly industrial applications. An environment-friendly, recyclable and economic strategy was developed to synthesize diaryl chalcogenides by the CuCl2-catalyzed C–S bond-formation reaction via iodobenzenes and benzenethiols/1,2-diphenyldisulfanes using N,N′-dimethylethane-1,2-diamine (DMEDA) as ligand, base, and solvent. For these reactions, especially the reactions of diiodobenzenes and aminobenzenethiols/disulfanediyldianilines, a range of substrates are compatible and give the corresponding products in good to excellent yields. Both of the reagents in the catalytic system (CuCl2/DMEDA) are inexpensive, conveniently separable, and recyclable for more than five cycles.

中文翻译：

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使用 DMEDA 作为配体、碱和溶剂的环境友好且可回收的 CuCl2 介导的 C-S 键偶联策略

简单的反应条件和可回收的试剂对于环保的工业应用至关重要。使用N,N'-二甲基乙烷-1,2-二胺，通过碘苯和苯硫醇/1,2-二苯基二硫烷，通过CuCl2催化的C-S键形成反应，开发了一种环境友好、可回收和经济的策略来合成二芳基硫属化物(DMEDA) 作为配体、碱和溶剂。对于这些反应，尤其是二碘苯和氨基苯硫醇/二硫烷二基二苯胺的反应，一系列底物是相容的，并以良好到极好的产率得到相应的产物。催化系统中的两种试剂 (CuCl2/DMEDA) 都很便宜，可方便地分离，并可循环使用 5 次以上。