Premium
Anchoring of Cu(II)–vanillin Schiff base complex on MCM‐41: A highly efficient and recyclable catalyst for synthesis of sulfides and 5‐substituted 1 H –tetrazoles and oxidation of sulfides to sulfoxides
Author(s) -
Khanmoradi Maryam,
Nikoorazm Mohsen,
GhorbaniChoghamarani Arash
Publication year - 2017
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.3693
Subject(s) - chemistry , catalysis , thermogravimetric analysis , sodium azide , aryl , schiff base , cycloaddition , azide , vanillin , heterogeneous catalysis , fourier transform infrared spectroscopy , organic chemistry , polymer chemistry , inorganic chemistry , chemical engineering , alkyl , engineering
A copper(II)–vanillin complex was immobilized onto MCM‐41 nanostructure and was used as an inexpensive, non‐toxic and heterogeneous catalyst in the synthesis of symmetric aryl sulfides by the cross‐coupling of aromatic halides with S 8 as an effective sulfur source, in the oxidation of sulfides to sulfoxides using 30% H 2 O 2 as a green oxidant and in the synthesis of 5‐substituted 1 H –tetrazoles from a smooth (3 + 2) cycloaddition of organic nitriles with sodium azide (NaN 3 ). The products were obtained in good to excellent yields. This catalyst could be reused several times without loss of activity. Characterization of the catalyst was performed using Fourier transform infrared, energy‐dispersive X‐ray and atomic absorption spectroscopies, X‐ray diffraction, thermogravimetric analysis, and scanning and transmission electron microscopies.