Histidine-functionalized chitosan-Cu(II) complex: a novel and green heterogeneous nanocatalyst for two and three component C-S coupling reactions

Using a fixing Cu2+ NP reaction on histidine modified chitosan, a novel applicable matrix was successfully prepared and investigated as a heterogeneous nanocatalyst for preparing diaryl sulfides and aryl benzyl thioethers. The Cu((II))-his@CS nanocatalyst was characterized by FT-IR, CHN, XRD, FE-SEM, TEM, EDX, ICP-AES and TG analysis. This novel copper nanocatalyst was used for two and three component C-S coupling reactions of different aryl halides. The nanocatalyst showed high catalytic activity and reusability in both reactions.