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Synthesis and characterization of VO–vanillin complex immobilized on MCM‐41 and its facile catalytic application in the sulfoxidation reaction, and synthesis of 2,3‐dihydroquinazolin‐4(1 H )‐ones and disulfides in green media
Author(s) -
Nikoorazm Mohsen,
Khanmoradi Maryam
Publication year - 2020
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201900531
Subject(s) - chemistry , catalysis , vanillin , thermogravimetric analysis , hydrogen peroxide , sulfoxide , schiff base , combinatorial chemistry , nuclear chemistry , organic chemistry , polymer chemistry
In this work, a vanillin complex is immobilized onto MCM‐41 and characterized by FT‐IR, X‐ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, thermogravimetric analysis, and BET techniques. This supported Schiff base complex was found to be an efficient and recoverable catalyst for the chemoselective oxidation of sulfides into sulfoxides and thiols into their corresponding disulfides (using hydrogen peroxide as a green oxidant) and also a suitable catalyst for the preparation of 2,3‐dihydroquinazolin‐4(1 H )‐one derivatives in water at 90°C. Using this protocol, we show that a variety of disulfides, sulfoxides, and 2,3‐dihydroquinazolin‐4(1 H )‐one derivatives can be synthesized in green conditions. The catalyst can be recovered and recycled for further reactions without appreciable loss of catalytic performance.