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Polystyrene-bound imidazole as a heterogeneous axial ligand for Mn(salophen)Cl and its use as biomimetic alkene epoxidation and alkane hydroxylation catalyst with sodium periodate

Paper ID Volume ID Publish Year Pages File Format Full-Text
44646 46050 2006 8 PDF Available
Title
Polystyrene-bound imidazole as a heterogeneous axial ligand for Mn(salophen)Cl and its use as biomimetic alkene epoxidation and alkane hydroxylation catalyst with sodium periodate
Abstract

In the present work, an account of biomimetic oxidation, Mn(III) salophen has been successfully bonded to imidazole modified polystyrene. Polystyrene-bound imidazole, (PSI), is not only a heterogeneous axial base but also is a support for immobilization of Mn(III) salophen. Mn(salophen)Cl-PSI catalyze alkene epoxidation with sodium periodate under agitation with magnetic stirring. Alkyl aromatic and cycloalkanes were oxidized efficiently to their corresponding alcohols and ketones in the presence of this catalyst. This new heterogenized catalyst is of high stability and reusability in the oxidation reactions. This heterogenized system showed the higher selectivity and stability in comparison with the homogeneous system, Mn(salophen)Cl. The catalyst, Mn(salophen)Cl-PSI, has been characterized by FT-IR, UV–vis spectroscopic techniques, SEM, thermal and elemental analysis. The effect of reaction parameters such as solvent and oxidant in the epoxidation of cis-cyclooctene were also investigated.

Keywords
Biomimetic; Epoxidation; Hydroxylation; Polystyrene; Periodate; Schiff base
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Polystyrene-bound imidazole as a heterogeneous axial ligand for Mn(salophen)Cl and its use as biomimetic alkene epoxidation and alkane hydroxylation catalyst with sodium periodate
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 311, 1 September 2006, Pages 43–50
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us