This study involves the aromatization reactions of some ketone derivatives through Manganese (III) acetate. The ketone derivatives used in the study are α-tetralone (1a), 2,4,7-trimethyl-7,8-dihydro quinolinone (1b)....This study involves the aromatization reactions of some ketone derivatives through Manganese (III) acetate. The ketone derivatives used in the study are α-tetralone (1a), 2,4,7-trimethyl-7,8-dihydro quinolinone (1b). At the end of the aromatization reactions of these ketone derivatives the synthesized structures of α-naphthol (2a), 2,4,7-trimethylquinoline-5-ol (2b) were identified by spectroscopic methods such as IR, 1H-NMR, <sup>13</sup>C-NMR, FAB-MS respectively. Micro-organism types such as Escherichia coli, ATCC 25922, Klepsiella pneumoniae, Staphylococcus aureus NRRL B767, Salmonella typhimurium NRRLB 4420, Bacillus subtilis NRS 744, Bacillus cereus ATCC 11778, Micrococcus luteus ATCC-9341, Listeria monoaytopenus ATCC-7644 bacteria and yeast fungus Candida albicans were used to study the anti-microbial properties of the synthesized 2b compound. The obtained results have determined that compound number 2b has a good antibacterial impact on Bacillus subtilis (NRS-744).展开更多
The reaction of phenylethyne with 2,4-pentanedione in the presence of manganese(Ⅲ) acetate and oxygen at room tempraure gave 4-acetyl-5-benzoyl-3-methyl-1, 2-dioxolan-3-ol, 2-acetyl-3-benzoloxirane and 3-acety-2-meth...The reaction of phenylethyne with 2,4-pentanedione in the presence of manganese(Ⅲ) acetate and oxygen at room tempraure gave 4-acetyl-5-benzoyl-3-methyl-1, 2-dioxolan-3-ol, 2-acetyl-3-benzoloxirane and 3-acety-2-methyl-phenylfuran展开更多
A dinuclear manganese(Ⅱ) complex, [Mn2(μ-OAc)2(phen)4](ClO4)2 1 (phen = phenanthroline), has been prepared by the reaction of Mn(OAc)2-4H2O, phen, tartaric acid and NaClO4·H2O in MeOH/H2O solution. ...A dinuclear manganese(Ⅱ) complex, [Mn2(μ-OAc)2(phen)4](ClO4)2 1 (phen = phenanthroline), has been prepared by the reaction of Mn(OAc)2-4H2O, phen, tartaric acid and NaClO4·H2O in MeOH/H2O solution. The crystal structure has been determined by X-ray diffraction. The crystal is of monoclinic, space group P21/c with a = 9.6052(4), b = 14.2353(7), c = 18.8893(8) A, β= 96.584(1)° C52H38C12Mn2N8O12, Mr = 1147.68, V= 2565.8(2) A^3, Dc = 1.486 g/cm^3, F(000) = 1172,μ = 0.668 cm^-1 and Z = 2. The final refinement gave R = 0.0605 and wR = 0.1619 for 3203 reflections with I 〉 2σ(I). The complex contains a dinuclear [Mn2(μ-OAc)2(phen)4]]^2+ cation located at a centre of symmetry with two syn-anti acetate bridges between the Mn atoms. Each Mn atom is coordinated by four N atoms from two chelating phen ligands and two O atoms from a pair of bridging acetate groups to furnish a distorted octahedral geometry. Two ClO4 anions exist around the cation [Mn2(μ-OAc)2(phen)4]^2+ as counter ions.展开更多
The amino acid Schiff base complex (Sal-AMBA-Mn) was prepared with p-amino-methylbenzoic acid, salicylaldehyde and Mn(OAc)2·4H2O. Its structures was characterized with IR and UV spectra. Oxygenation mechanism of ...The amino acid Schiff base complex (Sal-AMBA-Mn) was prepared with p-amino-methylbenzoic acid, salicylaldehyde and Mn(OAc)2·4H2O. Its structures was characterized with IR and UV spectra. Oxygenation mechanism of the complex in N, N-dimethylformamide solution was investigated. The results show that lower temperature is in favor of the oxygenation, and energy, enthalpy and entropy are -3.8 kJ/mol, -4.2 J/mol and -161.44 J/(mol·K), respectively. In the presence of the manganese complex, dehydroepiandrosterone acetate is effectively oxidized by molecular oxygen and the corresponding enone 7-ketodehydroepiandrosterone acetate is obtained. The yield is 62.1% when the oxidation is carried out under the reaction conditions of 60 ℃, 2 MPa of O2 pressure, C5H5N as a solvent and molar ratio of the substrate to the complex of 1:10.展开更多
文摘This study involves the aromatization reactions of some ketone derivatives through Manganese (III) acetate. The ketone derivatives used in the study are α-tetralone (1a), 2,4,7-trimethyl-7,8-dihydro quinolinone (1b). At the end of the aromatization reactions of these ketone derivatives the synthesized structures of α-naphthol (2a), 2,4,7-trimethylquinoline-5-ol (2b) were identified by spectroscopic methods such as IR, 1H-NMR, <sup>13</sup>C-NMR, FAB-MS respectively. Micro-organism types such as Escherichia coli, ATCC 25922, Klepsiella pneumoniae, Staphylococcus aureus NRRL B767, Salmonella typhimurium NRRLB 4420, Bacillus subtilis NRS 744, Bacillus cereus ATCC 11778, Micrococcus luteus ATCC-9341, Listeria monoaytopenus ATCC-7644 bacteria and yeast fungus Candida albicans were used to study the anti-microbial properties of the synthesized 2b compound. The obtained results have determined that compound number 2b has a good antibacterial impact on Bacillus subtilis (NRS-744).
文摘The reaction of phenylethyne with 2,4-pentanedione in the presence of manganese(Ⅲ) acetate and oxygen at room tempraure gave 4-acetyl-5-benzoyl-3-methyl-1, 2-dioxolan-3-ol, 2-acetyl-3-benzoloxirane and 3-acety-2-methyl-phenylfuran
文摘A dinuclear manganese(Ⅱ) complex, [Mn2(μ-OAc)2(phen)4](ClO4)2 1 (phen = phenanthroline), has been prepared by the reaction of Mn(OAc)2-4H2O, phen, tartaric acid and NaClO4·H2O in MeOH/H2O solution. The crystal structure has been determined by X-ray diffraction. The crystal is of monoclinic, space group P21/c with a = 9.6052(4), b = 14.2353(7), c = 18.8893(8) A, β= 96.584(1)° C52H38C12Mn2N8O12, Mr = 1147.68, V= 2565.8(2) A^3, Dc = 1.486 g/cm^3, F(000) = 1172,μ = 0.668 cm^-1 and Z = 2. The final refinement gave R = 0.0605 and wR = 0.1619 for 3203 reflections with I 〉 2σ(I). The complex contains a dinuclear [Mn2(μ-OAc)2(phen)4]]^2+ cation located at a centre of symmetry with two syn-anti acetate bridges between the Mn atoms. Each Mn atom is coordinated by four N atoms from two chelating phen ligands and two O atoms from a pair of bridging acetate groups to furnish a distorted octahedral geometry. Two ClO4 anions exist around the cation [Mn2(μ-OAc)2(phen)4]^2+ as counter ions.
基金Project(76132020) supported by the Post-Doctoral Science Fund of Central South University
文摘The amino acid Schiff base complex (Sal-AMBA-Mn) was prepared with p-amino-methylbenzoic acid, salicylaldehyde and Mn(OAc)2·4H2O. Its structures was characterized with IR and UV spectra. Oxygenation mechanism of the complex in N, N-dimethylformamide solution was investigated. The results show that lower temperature is in favor of the oxygenation, and energy, enthalpy and entropy are -3.8 kJ/mol, -4.2 J/mol and -161.44 J/(mol·K), respectively. In the presence of the manganese complex, dehydroepiandrosterone acetate is effectively oxidized by molecular oxygen and the corresponding enone 7-ketodehydroepiandrosterone acetate is obtained. The yield is 62.1% when the oxidation is carried out under the reaction conditions of 60 ℃, 2 MPa of O2 pressure, C5H5N as a solvent and molar ratio of the substrate to the complex of 1:10.