کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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66854 | 48454 | 2010 | 7 صفحه PDF | دانلود رایگان |
3-(2-Hydroxy-4-nitrophenylhydrazo)pentane-2,4-dione (H2L, 1) was synthesized by azocoupling of diazonium salts of 2-hydroxy-4-nitroaniline with pentane-2,4-dione and shown to exist in the hydrazone tautomeric form in the free state and in its new dicopper(II) complex [Cu2(H2O)2(μ-L)2] (2) whose X-ray crystal structure was determined. Complex 2 acts as a catalyst, under mild conditions, for the peroxidative oxidation (with H2O2) of cyclohexane to cyclohexanol, cyclohexanone and cyclohexyl hydroperoxide, in MeCN/H2O, and for the aerobic TEMPO-mediated selective oxidation of benzylic alcohols to the corresponding aldehydes, thus showing that azoderivatives of β-diketones can be the suitable ligands for such types of reactions.
The copper(II) complex [Cu2(H2O)2(μ-L)2] (H2L = 3-(2-hydroxy-4-nitrophenylhydrazo)pentane-2,4-dione) is catalytically active in the peroxidative oxidation of cyclohexane and in the TEMPO-mediated aerobic oxidation of benzylic alcohols.Figure optionsDownload high-quality image (81 K)Download as PowerPoint slide
Journal: Journal of Molecular Catalysis A: Chemical - Volume 318, Issues 1–2, 1 March 2010, Pages 44–50