Cu (II) and Cd (II) anchored functionalized mesoporous SBA-15 as novel, highly efficient and recoverable heterogeneous catalysts for green oxidative coupling of thiols and C-S cross-coupling reaction of aryl halides

Two novel heterogeneous catalysts have been synthesized by anchoring Cu and Cd Creatinine complexes onto the surface of mesochannels of SBA-15 for highly efficient oxidative coupling of thiols to disulfides using hydrogen peroxide and synthesis of sulfides using S-8 and KOH. The structure of the prepared catalysts was determined using SEM, FT-IR, X-ray diffraction, elemental analysis, N-2 adsorption desorption analysis and TGA. The catalysts significantly enhanced the reaction rate of the oxidative coupling of thiols and C-S bond formations. The catalysts were reused several times without appreciable loss in their activity. (C) 2018 Elsevier Ltd. All rights reserved.