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Chaline Detoni Nakédia M. F. Carvalho Rodrigo O. M. A. de Souza Donato A. G. Aranda O. A. C. Antunes 《Catalysis Letters》2009,129(1-2):79-84
The use of mononuclear Cu(II) 2,2′-bipyridine and 1,10-phenantroline complexes as catalysts in the oxidation of benzene, using hydrogen peroxide and tert-butyl hydroperoxide as oxidant in CH3CN/H2O solution is presented. The reactions were carried out at 25 and at 50 °C. The complexes [Cu(bipy)3]Cl2 · 6H2O (1), [Cu(bipy)2Cl]Cl · 5H2O (2), [Cu(bipy)Cl2] (3), [Cu(phen)3]Cl2 · 7H2O (4), [Cu(phen)2Cl]Cl · 5H2O (5), [Cu(phen)Cl2] (6) were able to oxidize benzene into phenol, hydroquinone and p-benzoquinone. Highest conversion (22%) was obtained using [Cu(Phen)Cl2] (6) as catalyst. 相似文献
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B. Louis C. Detoni N.M.F. Carvalho C.D. Duarte O.A.C. Antunes 《Applied Catalysis A: General》2009,360(2):218-225
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. 相似文献
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