Shen, Guodong, Lu, Qichao, Wang, Zeyou, Sun, Weiwei, Zhang, Yalin, Huang, Xianqiang, Sun, Manman, and Wang, Zhiming
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. [ABSTRACT FROM AUTHOR]