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- W4386277215 abstract "Reacting the alkylated 1,3,5-triaza-7-phosphatricyclo[3.3.1.1]decane (PTA), namely (PTA-CH2-C6H4-p-COOH)Br (1) or (PTA-CH2-C6H3-p-OH-m-CHO)Cl (2), with CuBr, CuI or [Cu(CH3CN)4]BF4, under mild conditions using different stoichiometric ratios resulted in the formation of the new water soluble copper complexes [CuBr2(PTA-CH2-C6H4-p-COOH)2]X (X = Br {3a}, I {3b} or BF4 {3c}), [CuBr(PTA-CH2-C6H4-p-COOH)3]Br3 (4) and [CuCl2(PTA-CH2-C6H3-p-OH-m-CHO)2]X (X = I {5a} or Cl {5b}). The compounds were characterized using multinuclear NMR, FTIR, ESI-MS and elemental analysis. The molecular structure of the neutral form of 3 was established by single crystal X-ray diffraction. In a homogeneous aqueous medium, the catalytic activity of the hydrophilic complexes was assessed for the cyclohexane oxidation to the KA oil (a mixture of cyclohexanone and cyclohexanol). The selectivity towards cyclohexanone is controlled by water, increasing with the H2O amount, and becoming higher than that of cyclohexanol for the 25–75% range of water in the solvent composition. Complex 5a exhibited the highest catalytic activity, achieving up to 21% conversion after 4 h at 50 °C using 0.5 mol% of the catalyst. Utilizing a similar loading of 5a, under microwave irradiation, afforded 18% of yield after 1.5 h at 70 °C." @default.
- W4386277215 created "2023-08-31" @default.
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- W4386277215 date "2023-10-01" @default.
- W4386277215 modified "2023-10-01" @default.
- W4386277215 title "Catalytic cyclohexane oxidation to KA oil using novel hydrosoluble copper(I) complexes bearing aminophosphine ligands: Water as a selectivity promoter" @default.
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- W4386277215 doi "https://doi.org/10.1016/j.mcat.2023.113512" @default.
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