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Oxygenation of sulfides catalysed by SBA‐15‐immobilized molybdenum(VI) complex of a bis(phenol) diamine ligand using aqueous hydrogen peroxide as a green oxidant
Author(s) -
Saberikia Iraj,
Safaei Elham,
Karimi Babak,
Lee YongIII
Publication year - 2018
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.4304
Subject(s) - chemistry , catalysis , diamine , thermogravimetric analysis , ligand (biochemistry) , molybdenum , hydrogen peroxide , aqueous solution , phenol , mesoporous silica , selectivity , inorganic chemistry , mesoporous material , polymer chemistry , nuclear chemistry , organic chemistry , biochemistry , receptor
A highly efficient and reusable molybdenum‐based catalyst has been synthesized by covalent grafting of a bis(phenol) diamine ligand, namely 2‐(((2‐bromoethyl)(2‐((3,5‐di‐ tert ‐butyl‐2‐hydroxybenzyl)amino)ethyl)amino)methyl)‐4,6‐di‐ tert ‐butylphenol, onto functionalized ordered mesoporous silica (SBA‐15) followed by complexation with MoO 2 (acac) 2 . The resulting organic–inorganic hybrid material was found to be a highly effective catalyst for oxygenation of various sulfides to their corresponding sulfoxides or sulfones. The catalyst was characterized using transmission and scanning electron microscopies, X‐ray photoelectron, Fourier transform infrared and atomic absorption spectroscopies, Brunauer–Emmett–Teller surface area analysis and thermogravimetric analysis. Mild reaction conditions, high selectivity and easy recovery and reusability of the catalyst render the presented protocol very useful for addressing industrial needs and environmental concerns.