“…Pyridine was distilled prior to use also (bp 115.2 °C). (2,3,7,8,12,18-Hexamethyl-13,17-diethyl-5-(2-pyridyl) porphyrin was synthesized by reaction of 2,2′-methylene-bis(3-ethyl-4-methyl-1H-pyrrole) with 3,4-dimethyl-1H-pyrrole-2-carbaldehyde in butan-1-ol in the presence of hydrobromic acid at room temperature followed by boiling with pyridine-2-carbaldehyde. [13] The UV-Visible spectra were measured on Agilent 8453 UVVisible spectrophotometers.…”
Section: Methodsmentioning
confidence: 99%
“…Co(AcO) 2 ⋅4H 2 O (47.0 mg, 0.19 mmol) and (2,3,7,8,12,18-hexamethyl-13,17-diethyl-5-(2-pyridyl)porphyrin H 2 P (20.0 mg, 0.04 mmol) were reacted in boiling dimethylformamide (10 ml) for 20-30 min. Completion of the reaction was monitored by TLC, until no traces of starting material were detected.…”
Section: Methodsmentioning
confidence: 99%
“…The reaction mixture was cooled, after dilution with water the products were extracted into chloroform and purified by flash chromatography (Al 2 O 3 /CHCl 3 ). The red zone displays on the chromatogram corresponding to Co II P. (2,3,7,8,12, The reaction of Co II P with pyridine at 298 K was studied in toluene by spectrophotometry. Series of toluene solutions with a constant concentration of the cobalt complex (4.1•10 -5 M) and different concentrations of Py (from 0 to 10.5 M) were prepared.…”
Section: Methodsmentioning
confidence: 99%
“…[9] This is also confirmed by the 1 H NMR spectra analysis of the donor-acceptor complex with pyridine. (Py) 2 Co II P in CDCl 3 exhibits paramagnetic properties (3d 7 configuration), whereas (porphyrinato)cobalt(III) and donor-acceptor complexes based on them exhibit diamagnetic properties (3d 6 configuration).…”
Section: Coordination Complex Of Cobalt(ii) Porphyrin With Pyridinementioning
confidence: 99%
“…Interest in cobalt porphyrins (CoPs) is maintained by their potential use in the design of electrochemical sensors, catalysts [1][2][3][4] and other photoelectronic devices. [5] Recent studies of the scientific group of Professor Oleg A. Golubchikov are proof of the growing interest in macroheterocyclic cobalt complexes.…”
“…Pyridine was distilled prior to use also (bp 115.2 °C). (2,3,7,8,12,18-Hexamethyl-13,17-diethyl-5-(2-pyridyl) porphyrin was synthesized by reaction of 2,2′-methylene-bis(3-ethyl-4-methyl-1H-pyrrole) with 3,4-dimethyl-1H-pyrrole-2-carbaldehyde in butan-1-ol in the presence of hydrobromic acid at room temperature followed by boiling with pyridine-2-carbaldehyde. [13] The UV-Visible spectra were measured on Agilent 8453 UVVisible spectrophotometers.…”
Section: Methodsmentioning
confidence: 99%
“…Co(AcO) 2 ⋅4H 2 O (47.0 mg, 0.19 mmol) and (2,3,7,8,12,18-hexamethyl-13,17-diethyl-5-(2-pyridyl)porphyrin H 2 P (20.0 mg, 0.04 mmol) were reacted in boiling dimethylformamide (10 ml) for 20-30 min. Completion of the reaction was monitored by TLC, until no traces of starting material were detected.…”
Section: Methodsmentioning
confidence: 99%
“…The reaction mixture was cooled, after dilution with water the products were extracted into chloroform and purified by flash chromatography (Al 2 O 3 /CHCl 3 ). The red zone displays on the chromatogram corresponding to Co II P. (2,3,7,8,12, The reaction of Co II P with pyridine at 298 K was studied in toluene by spectrophotometry. Series of toluene solutions with a constant concentration of the cobalt complex (4.1•10 -5 M) and different concentrations of Py (from 0 to 10.5 M) were prepared.…”
Section: Methodsmentioning
confidence: 99%
“…[9] This is also confirmed by the 1 H NMR spectra analysis of the donor-acceptor complex with pyridine. (Py) 2 Co II P in CDCl 3 exhibits paramagnetic properties (3d 7 configuration), whereas (porphyrinato)cobalt(III) and donor-acceptor complexes based on them exhibit diamagnetic properties (3d 6 configuration).…”
Section: Coordination Complex Of Cobalt(ii) Porphyrin With Pyridinementioning
confidence: 99%
“…Interest in cobalt porphyrins (CoPs) is maintained by their potential use in the design of electrochemical sensors, catalysts [1][2][3][4] and other photoelectronic devices. [5] Recent studies of the scientific group of Professor Oleg A. Golubchikov are proof of the growing interest in macroheterocyclic cobalt complexes.…”
An easily synthesized water-soluble ruthenium complex, [C 6 H 5 CH 2 N(CH 3 ) 2 H] 2 [Ru(dipic)Cl 3 ] (dipic =2,6-pyridinedicarboxylate), as a catalyst showed high efficiency in the oxidation of alkanes and secondary alcohols to their corresponding ketones under solvent-free and low-catalyst-loading conditions. This catalytic system could tolerate a variety of substrates and gave the corresponding ketones in good to excellent yields. The products were easily separated and purified due to the water solubility of the ruthenium complex.
During the past few years, a great deal of effort has been devoted to the anchoring of catalytic oxidation. In this work, three new catalysts CuPp, MnPp and ZnPp by solvothermal methods with 5, 10, 15, 20‐tetrakis(4‐N‐pyrazolyl)‐phenyl porphyrin (H2Pp) and the corresponding metal salts have been synthesized and structurally characterized. The single crystal structures determined by X‐ray diffraction show the bond distances of M‐N in porphyrin cores determined the conformation of porphyrin rings. We explored the catalytic activity of CoPp, CuPp, MnPp and ZnPp for oxidation of alkylbenzenes. The experimental results display these products exhibit high catalytic activities and selectivities for oxidation of ethylbenzene to acetophenone, and can be reused by filtration without appreciable decrease in catalytic activity and selectivity.
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