603-34-9Relevant articles and documents
An Investigation into the Electrochemical Oxidation of Some Aromatic Amines in the Room-Temperature Molten Salt System Aluminium Chloride-n-Butylpyridinium Chloride
Robinson, J.,Osteryoung, R. A.
, p. 4415 - 4420 (1980)
The electrochemical oxidation of a number of aromatic amines in the low-temperature molten salt system aluminium chloride-N-butylpyridinium chloride has been investigated.In acidic melts TPA is oxidized reversibly to its radical cation which at more positive potentials undergoes a further, chemically irreversibly oxidation to the dication of the amine.In basic melts the stability of the radical cation is reduced and it couples to form tetraphenylbenzidine which is itself further oxidized.The oxidation of the other amines was more complex as a result of their being involved in complexation equilibria with acid species in the melt.In basic melts where they were uncomplexed, their behavior was similar to that of TPA, but, in acidic melts, the amine complexes underwent irreversible two-electron oxidations to their respective dications at potentials ca. 1 V positive of the first oxidation potential of the free amine.TMB, which, depending on the melt acidity, could be present as the free amine mono or di complex, was also oxidized to its dication.The actual mechanism of this oxidation was dependent upon the melt acidity.The oxidation of TMB was also shown to be dependent upon the temperature, the TMB cation radical being stable at low temperature but becoming unstable with respect to disproportionation as the temperature was increased.
Nakano et al.
, p. 1,5 (1979)
Laser flash photolysis generation and kinetic studies of corrole-manganese(v)-oxo intermediates
Zhang, Rui,Harischandra, Dilusha N.,Newcomb, Martin
, p. 5713 - 5720 (2005)
Corrole-manganese(V)-oxo intermediates were produced by laser flash photolysis of the corresponding corrole-manganese(IV) chlorate complexes, and the kinetics of their decay reactions in CH2Cl2 and their reactions with organic reductants were studied. The corroie ligands studied were 5,10,15-tris(pentafluorophenyl)corrole (H3TPFC), 5,10,15-triphenylcorrole (H3TPC), and 5,15-bis(pentafluorophenyl)-10- (p-methoxyphenyl)corrole (H3BPFMC). In self-decay reactions and in reactions with substrates, the order of reactivity of (Cor)MnV(O) was TPC > BPFMC > TPFC, which is inverted from that expected based on the electron-demand of the ligands. The rates of reactions of (Cor)MnV(O) were dependent on the concentration of the oxidant and other manganese species, with increasing concentrations of various manganese species resulting in decreasing rates of reactions, and the apparent rate constant for reaction of (TPFC)MnV(O) with triphenylamine was found to display fractional order with respect to the manganese-oxo species. The kinetic results are consistent in part with a reaction model involving disproportionation of (Cor)MnV(O) to give (Cor)MnIV and (Cor)MnVI(O) species, the latter of which is the active oxidant. Alternatively, the results are consistent with oxidation by (Cor)MnV(O) which is reversibly sequestered in non-reactive complexes by various manganese species.
Method for synthesizing organic aromatic nitrogen-containing compound by taking nitrogen as nitrogen source
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Paragraph 0034-0039, (2021/05/08)
The invention provides a method for synthesizing an organic aromatic nitrogen-containing compound by taking nitrogen as a nitrogen source, and belongs to the field of organic synthesis. The invention provides a method for synthesizing an organic aromatic nitrogen-containing compound by taking nitrogen as a nitrogen source, which is characterized by comprising the following steps of: 1, reducing nitrogen by lithium powder to form lithium nitride; and 2, reacting the lithium nitride with a halogenated aromatic compound under the action of a transition metal catalyst, a ligand, alkali and a phase transfer catalyst to obtain an organic aromatic nitrogen-containing compound; wherein the two steps of reactions are completed in one pot. The method realizes the conversion of cheap nitrogen to the high-added-value aromatic nitrogen-containing compound, and also has the advantages of mild reaction conditions, good compatibility of substrate functional groups, high yield and the like.
Metal-organic frameworks derived CuONPs@C nanocatalysts for synthesizing optoelectronic triarylamine molecules
Kundu, Anu,Kumar, Vadivel Vinod,Anthony, Savarimuthu Philip
, (2020/11/05)
Carbon encapsulated copper oxide nanoparticles (CuONPs@C) fabricated using copper metal organic frameworks (Cu-MOFs) used as reusable nanocatalysts in Ullmann C[sbnd]N coupling reactions for synthesizing optoelectronic triphenylamine (TPA) and carbazole (CBZ) derivatives. The formation of CuONPs in carbon matrix was confirmed by powder X-ray diffraction (PXRD), X-ray photoelectron spectroscopy (XPS) and high-resolution transmission electron microscopy (HR-TEM). The catalytic activity of CuONPs@C was performed with diphenylamine/carbazole with substituted aryl halides in presence of mild K2CO3 base that produced triarylamines with 63–83% yields. Carbazole triarylamines exhibited strong solid state fluorescence (Φf = 14.54–36.32%) with λmax between 370 and 420 nm.
A base-free Chan–Lam reaction catalyzed by an easily assembled Cu(II)-carboxylate metal-organic framework
Ma, Ruixuan,Qin, Jianhua,Shi, Lei,Zhang, Xinhai
, p. 795 - 799 (2021/07/06)
A new copper(II) metal-organic framework is constructed as a sustainable copper heterogeneous catalyst. Cu-DPTCA, with high catalytic activity, can effectively promote the Chan–Lam coupling reaction of arylboronic acids and amines without adding any base or additive.
