Category: 1821-27-8

Mrzewinski, Tadeusz published the artcileReactions of nitrogen dioxide with diphenylamine, Safety of Bis(4-nitrophenyl)amine, the publication is Biuletyn Wojskowej Akademii Technicznej imienia Jaroslawa Dabrowskiego (1964), 13(138), 59-67, database is CAplus.

An amount of 4.78-6.66 g. dry gaseous NO₂, either O-free or containing 0.66-0.75 mol O per mol, was passed into a solution of 10 g. Ph₂NH in 130 mL. C₆H₆, either without catalyst or with 0.01 mg. N,N-diphenyl-N’-picrylhydrazide (I), or with Bz₂O₂. The mixture was refluxed 0.5-3.5 h. at 20 or 77¡ã. The mixture was refluxed 0.5-3.5 h. at 20 or 77¡ã. The products were separated by means of fractional crystallization from acetone and were identified by determination of the m.p., mol. weight, and N content and also polarog. as weil as spectrophotometrically. The following products and yields were obtained, without catalysts at 20¡ã: N-nitroso-4-nitrodiphenylamine (II) 0.28 g. and N-nitrosodiphenylamine (III) in trace amount; with O at 20¡ã: II 0.20 g., III in trace amount, and diphenyldihydrophenazine (IV) 0.02 g.; with O at 77¡ã: II 0.15 and 2,4-dinitrodiphenylamine (V) 0.06 g.; with O and I at 20¡ã: II 0.70, III 0.10, V 0.30, 4,4′-dinitrodiphenylamine (VI) 0.22, 4-nitrodiphenylamine (VII) 0.10, and N,N’-bis(2,4-dinitrophenyl)benzidine (VIII) 0.90 g.; with O and I at 77¡ã: II and VI in trace amounts and V 0.20 g.; with 0.01 g. Bz₂O₂ at 20¡ã: II 0.84, III 0.41, V 0.42, VI 0.34, and N,N’-bis(4-nitrophenyl)benzidine (IX) 0.09 g.; with O and 0.01 g. of Bz₂O₂ during 3.5 h.: II 0.80, V 0.57, VI 0.31, VIII 0.15, IX 0.13, and 2,4,4′-trinitrodiphenylamine (X) 0.20 g.; with O and 0.10 g. Bz₂O₂ during 0.5 h.: II 0.64, V 0.50, VI 0.27, VII 0.19, IX 0.18, and X 0.32 g. A free-radical mechanism of the reaction is suggested according to the equation: Ph₂NH + NO₂ ¡ú Ph₂N¡¤ + HNO₂. The catalysts are considered to initiate the formation of radicals.

Biuletyn Wojskowej Akademii Technicznej imienia Jaroslawa Dabrowskiego published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Safety of Bis(4-nitrophenyl)amine.

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Levitsky, Harry published the artcileInfrared spectra of the nitration products of diphenylamine, HPLC of Formula: 1821-27-8, the publication is Applied Spectroscopy (1968), 22(5)(Pt. 1), 493-6, database is CAplus.

The ir spectra of the 19 nitration products of diphenylamine were established. A comparison was made of the spectra obtained, and assignments were made to the principal bands. The compounds considered were diphenylamine, N-nitrosodiphenylamine, 4-nitrosodiphenylamine, 2-nitrodiphenylamine, 4-nitrodiphenylamine, N-nitroso-2-nitrodiphenylamine, N-nitroso-4-nitrodiphenylamine, 2,2′-dinitrodiphenylamine, 2,4-dinitrodiphenylamine, 2,4′-dinitrodiphenylamine, 4,4′-dinitrodiphenylamine, N-nitroso-2,4′-dinitrodiphenylamine, N-nitroso-4,4′-dinitrodiphenylamine, 2,2′,4-trinitrodiphenylamine, 2,4,4′-trinitrodiphenylamine, 2,4,6-trinitrodiphenylamine, 2,2′,4,4′-tetranitrodiphenylamine, 2,2′,4,4′,6-pentanitrodiphenylamine, 2,2′,4,4′,6,6,’-hexanitrodiphenylamine, and picrid acid (2,4,6-trinitrophenol).

Applied Spectroscopy published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, HPLC of Formula: 1821-27-8.

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https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
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Lutskii, A. E. published the artcileInteraction of functional groups through ¦Ð-electron systems. V. Interaction through aromatic rings connected by a monofunctional bridging group, Category: catalysis-chemistry, the publication is Zhurnal Fizicheskoi Khimii (1968), 42(8), 1861-4, database is CAplus.

Dipole moments (¦ÌH) of 4-XC6H4ZC6H4Y-4′ where Z was CH2, O, S, NH, and CH2CH2 and X and Y were NO2, CN, Cl, Br, I, OH, Me, and NH2 were measured. Values of ¦ÌH prove existence of the interaction of the substituents in 4,4′ position through bridges with ¦Ò and p electrons. Any change in the electron d. at Z in the case of its interaction with substituents of the 1st ring causes a change in degree of its interaction with substituents of the 2nd ring. Only electron effects are transmitted from one substituent to the other substituents of the rings through the bridging groups.

Zhurnal Fizicheskoi Khimii published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Category: catalysis-chemistry.

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Shundrina, Inna K. published the artcileSynthesis, Electrochemical Reduction and Radical Anions of 2-[Bis(4-amino(nitro)phenyl)aminomethyl]-9H-thioxanthene-9-one Derivatives, Name: Bis(4-nitrophenyl)amine, the publication is European Journal of Organic Chemistry (2018), 2018(26), 3471-3480, database is CAplus.

2-[Bis(4-amino(nitro)phenyl)aminomethyl]-9H-thioxanthene-9-ones and their S-oxide derivatives have been synthesized, and their electrochem. reduction (ECR) in N,N-dimethylformamide (DMF) and MeCN has been studied by cyclic voltammetry (CV). The thioxanthene-9-one group [Th(O)S] and thioxanthene-9-one S-dioxide group [Th(O)SO₂] determine the first one-electron peak potentials of 2-[bis(4-aminophenyl)aminomethyl]-9H-Th(O)S/Th(O)SO₂. The first peak potentials of the corresponding dinitro compounds are determined by the ratio of reduction potentials of bis(4-nitrophenyl)amino and 9H-thioxanthene-9-ones moieties. Radical anions (RA) of the synthesized compounds have been obtained by ECR in DMF and MeCN and characterized by EPR spectroscopy together with DFT calculations at the (U)B3LYP/6-31 + G/PCM level of theory. Th(O)S and Th(O)SO₂ groups are thermally stable up to 270 ¡ãC. The synthesized 2-[bis(4-aminophenyl)aminomethyl]-9H-Th(O)S/Th(O)SO₂ are electrochem. active monomers for subsequent synthesis of the corresponding electroactive polyimides with thioxanthene-9-one based pendant groups for their applications in the design of nonvolatile memory storage devices. The pendant groups are characterized by low redox potentials and reversibility towards electron transfer.

European Journal of Organic Chemistry published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C9H7NO2, Name: Bis(4-nitrophenyl)amine.

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Stewart, Ross published the artcileStrongly basic systems. IV. Substituent effects on the acidity of aromatic amines, Quality Control of 1821-27-8, the publication is Canadian Journal of Chemistry (1964), 42(7), 1694-8, database is CAplus.

The effect of ring substituents on the acidity of anilines and diphenylamines is examined In general the effects are similar to those found in the analogous ionization of phenols. The acidities of diphenylamines having 2 or 3 nitro groups in one ring and variable substituents in the other ring can be correlated by the Hammett relation. A good correlation is found between the acidities and basicities of aromatic amines, although basicity is more sensitive to the presence of ring substituents than is acidity. The relation of these results to the general question of 1st and 2nd dissociation constants of dibasic acids is considered.

Canadian Journal of Chemistry published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C17H18N3NaO3S, Quality Control of 1821-27-8.

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https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Gavat, Odile published the artcile3D supramolecular self-assembly of [60]fullerene hexaadducts decorated with triarylamine molecules, COA of Formula: C12H9N3O4, the publication is Chemical Communications (Cambridge, United Kingdom) (2018), 54(55), 7657-7660, database is CAplus and MEDLINE.

A clickable fullerene hexa-adduct scaffold has been functionalized with twelve triarylamine subunits. The light-triggered self-assembly of this mol. unit leads to 3D honeycomb-like structures with inner pores of around 10 nm diameter Multiple grafting of triarylamine subunits onto a hard-core C₆₀ unit increases the dimensionality of the self-assembly process by reticulating the 1D nanowires typically obtained from the supramol. polymerization of triarylamine monomers.

Chemical Communications (Cambridge, United Kingdom) published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, COA of Formula: C12H9N3O4.

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https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Mathias, A. published the artcileNitrogen-14 chemical shifts in substituted anilines, Formula: C12H9N3O4, the publication is Journal of the Chemical Society [Section] B: Physical Organic (1971), 397-9, database is CAplus.

Amino-14N chem. shifts of the anilines XC6H4NH2 (X = H; p-NO2, p-Ac, p-AcO, p-Br, p-Cl, p-Me, p-NH2, m-NO2, m-Ac, m-CF3, m-CO2Me, m-Me) and PhNHX (X = Me, Ph, m-MeOC6H4, p-MeOC6H4) and (p-O2NC6H4)2NH in Me2CO were determined by the heteronuclear double resonance method. The shifts correlated linearly with Hammett ¦Ò values of the ring substituents and related directly to electron ds. at the N nucleus. The 14N and 15N chem. shifts (Bramwell, M. R., Radall, E. W., 1969) of XC6H4NH2 (X = p-Me, p-Br, p-NO2, H) were identical.

Journal of the Chemical Society [Section] B: Physical Organic published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Formula: C12H9N3O4.

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https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Solov’eva, I. A. published the artcilePreparation of secondary aromatic and aliphatic aromatic amines via the Smiles rearrangement, COA of Formula: C12H9N3O4, the publication is Zhurnal Organicheskoi Khimii (1968), 4(11), 1973-9, database is CAplus.

The easily accessible amides p-O2NC6H4-OCH2CONHR [where R is Me, Et, PhCH2, Ph, ¦Á-naphthyl, ¦Â-naphthyl, p-PhC6H4, o-PhC6H4, p-ClC6H4, p-O2NC6H4, o-Et2NC6H4, p-HO2CC6H4, o-MeOC6H4, o-HO2CC6H4, 2,5-HO2C(O2N)C6H4, or 4,2-Cl(HO2C)C6H4] undergo Smiles rearrangement and give amines p-O2NC6H4NHR (R as above). Under the same reaction conditions m-O2NC6H4OCH2CONHR or PhOCH2CONHR (where R is Me, Et, PhCH2, or Ph) decompose to m-O2NC6H4OCH2CO2H and NH2R. o-O2NC6H4-OCH2CONH2 or p-O2NC6H4OCH2CONH2 give only very low yields of the corresponding nitroanilines; the disubstituted amides o-O2NC6H4OCH2CONRR1 or p-O2NC6H4OCH2-CONNR1 do not rearrange.

Zhurnal Organicheskoi Khimii published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C6H8O6, COA of Formula: C12H9N3O4.

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https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Sheremeteva, T. V. published the artcileFormation and strength of amide and imide bonds, Category: catalysis-chemistry, the publication is Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya (1966), 695-700, database is CAplus.

cf. CA 56, 4615g. Heating aqueous solutions of the arylamides of citraconic acid results in competing reactions of cyclization to imides and hydrolysis of the amide bond; the predominance of the reactions is determined by basicity of the initial amine. The greater is the electron-acceptor ability of the amine, the more readily hydrolyzed is the amide bond and the more active is the H atom on N group; monoamides of citraconic acid formed by weak amines, such as nitroaniline, suffered mainly hydrolysis of the amide group in hot aqueous medium (72% hydrolysis in 16 hrs. at 100¡ã was noted) while cyclization to the imide was feasible only in EtOH solution (22% in 16 hrs. heating) and this reaction was facilitated by removal of H₂O from the reaction mixture, so that with added P₂O₅ the imide yield rose to 44% in 16 hrs. heating. Amines with somewhat greater basicity (PhNH₂, glycine residues) underwent cyclization to imides in aqueous solution at 100-10¡ã by 63-88% and the imide rings were relatively more stable to hydrolysis. When cyclization is inhibited by introduction of a 2nd substituent at N atom, the resulting N-amide bond is easily hydrolyzed at 100¡ã when it contains aryl and alkyl groups, while the N,N-dialkylamino group in the amides remains intact; the low level of activity of the H atom in the alkyl amides is the reason for the need to use high temperature (140-200¡ã) for cyclization of such amides. Citraconic anhydride treated with Ph-NHEt in Et₂O gave in 2-3 hrs. N-ethylcitraconanilide, m. 108¡ã; similarly were prepared the N,N-dimethylamide, m. 105¡ã; anilide, m. 170¡ã; p-nitroanilide, m. 159¡ã. Citraconylaminoacetic acid in aqueous KOH was evaporated to yield 70% KO₂CCH:CMeCONHCH₂CO₂K, m. 203-4¡ã; this with AgNO₃ gave the di-Ag salt. The di-K salt above neutralized with 2N H₂SO₄ and heated in a sealed tube 16 hrs. at 100¡ã gave 53.3% citraconylaminoacetic acid, m. 127¡ã, as the free carboxymethylenamide of citraconic acid could not be isolated from aqueous solution owing to facile cyclization. Kinetic curves were presented for the rate of cyclization in aqueous solution and the following order of facility of imide formation was found for amides of citraconic acid (decreasing ease of cyclization): anilide, carboxymethylenamide, p-nitroanilide. Heating the anilide in H₂O 16 hrs. resulted in 88% cyclization to the imide, m. 98¡ã; a kinetic curve of the reaction was shown. p-Ni-troanilide similarly treated gave a low yield of the p-nitrophenyl-imide, m. 146¡ã.

Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C9H7NO4, Category: catalysis-chemistry.

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https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Myers, H. P. published the artcileThe transmission of infrared radiation through sintered uranium dioxide, Computed Properties of 1821-27-8, the publication is New Nucl. Mater. Including Non-Metal. Fuels, Proc. Conf., Prague (1963), 323-8, discussion, 328-9, database is CAplus.

The infrared absorption spectra of sintered UO₂ samples were measured at 0.86-15 ¦Ì. The contribution that transmitted radiant energy can make to the heat-transfer properties of UO₂ was calculated It is postulated that in unirradiated UO₂ radiant energy transfer can only be significant above 1500¡ãK., at which temperature the contribution is approx. 10% of the lattice conductivity; at 3000¡ãK., it equals the lattice conductivity It is probably the maximum contribution since reflection losses, temperature effects on the absorption spectrum, and impurities such as fission products will reduce the transmittance of irradiated UO₂.

New Nucl. Mater. Including Non-Metal. Fuels, Proc. Conf., Prague published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Computed Properties of 1821-27-8.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia