Abstract
Copper(II) N,N′-bis[4-(N,N-diethylamino)salicylidene]ethylenediamine (CAS) complex, which has the metal–ligand coordination “CuN2O2” that mimics the galactose enzyme active site, was synthesised and incorporated onto the organo-modified MCM-48. The supported CAS catalyst successfully catalysed the conversion of o-aminophenol to 2-amino-3H-phenoxazon-3-one in the presence of aqueous peroxide as oxidant. The catalytic performance of the CAS supported on organo-modified MCM-48 was found highly affected by the temperature, the type of aqueous peroxide and reaction solvent used.
Graphical Abstract
A salen-type copper complex of N2O2 donor ligand was synthesised and incorporated onto the modified MCM-48. The corresponding supported catalysts are active in the oxidation of o-aminophenol to 2-amino-3H-phenoxazin-3-one in the presence of peroxide as an oxidant.
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Acknowledgments
S. Endud thanks Universiti Teknologi Malaysia (UTM) for the Research University grant Q.J.130000.7113.02H23 and MOSTI for the National Nanotechnology Directorate Top-Down Grant R.J130000.7926.4H007. Authors thank the Ibnu Sina Institute for Fundamental Science Studies, UTM for research facilities. S. Budagumpi thanks UTM for a post-doctoral research fellowship.
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Chin, TK., Endud, S., Jamil, S. et al. Oxidative Dimerization of o-Aminophenol by Heterogeneous Mesoporous Material Modified with Biomimetic Salen-Type Copper(II) Complex. Catal Lett 143, 282–288 (2013). https://doi.org/10.1007/s10562-012-0959-1
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DOI: https://doi.org/10.1007/s10562-012-0959-1