Synlett 2015; 26(04): 537-542
DOI: 10.1055/s-0034-1379878
letter
© Georg Thieme Verlag Stuttgart · New York

Copper Nanopowder Catalyzed Cross-Coupling of Diaryl Disulfides with Aryl Iodides in PEG-400

Xiang-mei Wu*
Department of Chemistry, College of Ecology, Lishui University, Lishui, Zhejiang 323000, P. R. of China   Email: lswxm7162@163.com
,
Guo-bing Yan
Department of Chemistry, College of Ecology, Lishui University, Lishui, Zhejiang 323000, P. R. of China   Email: lswxm7162@163.com
› Author Affiliations
Further Information

Publication History

Received: 04 October 2014

Accepted after revision: 16 November 2014

Publication Date:
07 January 2015 (online)


Abstract

An eco-friendly thiolation via diaryl disulfides and aryl iodides under ligand-free conditions is reported. With copper nanopowder as catalyst and PEG-400 as solvent, a variety of unsymmetrical diaryl sulfides are synthesized in good to excellent yields. The process is free from foul-smelling and unstable thiols and the copper nanopowder–PEG-400 catalytic system can be directly reused for four repetitive cycles.

Supporting Information