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Cu(II) bipyridine and phenantroline complexes: Tailor-made catalysts for the selective oxidation of tetralin

Paper ID Volume ID Publish Year Pages File Format Full-Text
42973 45949 2009 8 PDF Available
Title
Cu(II) bipyridine and phenantroline complexes: Tailor-made catalysts for the selective oxidation of tetralin
Abstract

Mononuclear Cu(II) complexes have been synthesized, and their structure thoroughly characterized by electrospray ionization mass spectrometry (ESI-MS). These 2,2′-bipyridine and 1,10-phenantroline mononuclear Cu(II) complexes have been tested as catalysts in the partial oxidation of tetralin (1,2,3,4-tetrahydronaphthalene), using hydrogen peroxide as oxidant in acetonitrile/water as solvent.The complexes [Cu(bipy)3]Cl2·6H2O (1), [Cu(bipy)2Cl]Cl·5H2O (2), [Cu(bipy)Cl2] (3), [Cu(phen)3]Cl2·6H2O (4), [Cu(phen)2Cl]Cl·5H2O (5), [Cu(phen)Cl2] (6) were able to oxidize tetralin at room temperature, at high degrees of conversion (62.1% with 2) into α-tetralol and α-tetralon at 91% selectivity (81% in 1-tetralon).Depending on nature and number of ligands (bipyridine or phenantroline) surrounding Cu2+ cation, one was able to tailor both the activity toward tetralin oxidation, and the selectivity toward 1-tetralol and 1-tetralone products, but also to raise the yield in valuable α-tetralone.

Graphical abstractMononuclear 2,2′-bipyridine and 1,10-phenantroline mononuclear Cu(II) complexes have been synthesized, and their structure determined by ESI-MS. These complexes have been tested in the partial oxidation of tetralin (1,2,3,4-tetrahydronaphthalene), using hydrogen peroxide as oxidant in acetonitrile/water solvent. [Cu(bipy)2Cl]Cl catalyst was able to oxidize tetralin at room temperature, at 62.1% conversion into 1-tetralol and 1-tetralone at 91% selectivity (81% in 1-tetralone).Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Tetralin; Partial oxidation; Mononuclear Cu(II) complexes; 2,2′-Bipyridine; 1,10-Phenantroline; Hydrogen peroxide
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Cu(II) bipyridine and phenantroline complexes: Tailor-made catalysts for the selective oxidation of tetralin
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 360, Issue 2, 1 June 2009, Pages 218–225
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