Category: 1821-27-8

Lutskii, A. E. published the artcileInteraction of substituents through aromatic rings connected by a bridge group, Recommanded Product: Bis(4-nitrophenyl)amine, the publication is Zhurnal Obshchei Khimii (1965), 35(12), 2083-90, database is CAplus.

Detailed examination of the absorption spectra was made of ArZArAr’ compounds where Ar groups were C₆H₄Y groups containing as p-substituents such groups as Cl, HO, MeO, NH₂, NO₂, NMe₂, while Z were bridge units such as CH:CH, CH:CHC₆H₄CH:CH-p, S, NH, CH₂, Cú·C, or I⁺ (iodonium salts). It was shown that in such bridged compounds in the absence of Z bridge groups containing electrons and during optical excitation, there is an absence of charge transfer between the functional groups present in the Ar groups; the absorption bands contain only electron transitions between levels characteristic of functional groups of the individual Ar groups sep.

Zhurnal Obshchei 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, Recommanded Product: Bis(4-nitrophenyl)amine.

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

Tronov, B. V. published the artcileSynthesis of certain nitro and amino derivatives of diphenylamine and their complexes with acid reagents, Quality Control of 1821-27-8, the publication is Dokl. 2-oi [Vtoroi] Mezhvuz. Konf. po Khim. Org. Kompleksn. Soedin. (1963), 67-8, database is CAplus.

Formation of complexes of nitro and amino derivatives of Ph₂NH (I) was investigated. 4-Nitro- (Ia), 4,4′-dinitro- (Ib), 2,4-dinitro (Ic), 2,4-diamino (Id), and 4,4′-diaminodiphenylamine (Ie) were prepared Id and Ie were obtained by reduction of the corresponding nitro derivatives with SnCl₂ and HCl. The following complex compounds were prepared and extracted from alc. or C₆H₆ (composition of the complex, ratio of components, and m.p. given): Id + 2,4-dinitrophenol (II), 1:1, 83-4¡ã; Id + 2,6-dibromo-4-nitrophenol (III), 1:1, 156-8¡ã; Id + 2,6-dichloro-4-nitrophenol (IV), 1:1, 150-2¡ã; Id + picric acid (V), 1:1, 177-8¡ã; Ic + II, 1:1, 95-6¡ã; Ic + V, 1:1, 100-2¡ã; Ia + IV, 1:1, 94-6¡ã; Ia + III, 1:1, 98-9¡ã; Ie + V, 1:1, > 220¡ã; Ie + II, –, >220¡ã; Ie + IV, –, >220¡ã; Ie + III, –, >220¡ã.

Dokl. 2-oi [Vtoroi] Mezhvuz. Konf. po Khim. Org. Kompleksn. Soedin. 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 C12H19BrS, Quality Control of 1821-27-8.

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

Tang, Zhongping published the artcileTheoretical studies on the structure and property of alkylated diphenylamine antioxidants, Quality Control of 1821-27-8, the publication is Journal of Theoretical & Computational Chemistry (2014), 13(5), 1450035/1-1450035/17, database is CAplus.

Diarylamines (Ar₂NH) are generally used as antioxidants to inhibit or retard the auto-oxidation degradation of lubricating oil by trapping ROO¡¤ radicals. In the present study, 20 kinds of 4,4′-disubstituted diphenylamine compounds were investigated through d. functional theory (DFT) calculations The results indicate that the N-H bond dissociation enthalpy (BDE) linearly correlates its one-electron oxidation potential, the difference in Mulliken at. charge on the two atoms of N-H bond, the reaction rate constant of hydrogen transfer from Ar₂NH to peroxy radical, and the chem. hardness of the resulted Ar₂N¡¤ radical, resp. The substitution of alkyl groups (electron-donating groups) decreases the N-H BDE, one-electron oxidation potential and the reaction rate constant, while that of significant electron-withdrawing groups such as -NO₂ and -COOCH₃ increases these three parameters. The electron-donating groups such as alkyls could improve the antioxidation performance of 4,4′-disubstituted diphenylamines whereas electron-withdrawing groups have the contrary effect. In addition, the frontier MO of Ar₂NH has been also analyzed.

Journal of Theoretical & Computational 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 C8H8N2OS, Quality Control of 1821-27-8.

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

Shurukhin, Yu. V. published the artcileThermal reactions of 1-aryl-5-methyltetrazoles, Category: catalysis-chemistry, the publication is Khimiya Geterotsiklicheskikh Soedinenii (1984), 1422-7, database is CAplus.

Thermolysis of the title compounds I (R = Me, NO₂, NH₂) at 20-800¡ã leads via isomerization to azides and elimination of N₂ to give singlet nitrenes with subsequent rearrangement to benzimidazoles and carbodiimides. Electronic effects of p-substituents in the benzene ring influenced the thermolysis mechanism. Approx. 30 products were confirmed.

Khimiya Geterotsiklicheskikh Soedinenii 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 C3H9ClOS, Category: catalysis-chemistry.

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

Lutskii, A. E. published the artcileDipole moments of some substituted diphenylamines, Name: Bis(4-nitrophenyl)amine, the publication is Zhurnal Obshchei Khimii (1963), 33(3), 985-7, database is CAplus.

The following values of dipole moments (in D.) were determined from dielec. constants of solutions in C₆H₆ at 25¡ã (p,p’-dihydroxy and the nitro derivatives were examined in dioxane) in a group of substituted Ph₂NH [substituents and dipole moments (D.) shown]: 3-HO, 1.98; 4-HO, 1.95; 3-MeO, 1.70; 4-MeO, 1.79; 2,2′-(HO)₂, 3.69; 4,4′-(HO)₂, 3.50; 4,4′-HO(MeO), 2.32; 4,4′-(MeO)₂, 2.06; N,4- Ph(MeO), 2.09; N,4,4′- Ph(MeO)₂, 2.49; N,4- Ac(AcO), 4.14; N,4,4′-Ac(AcO)₂, 4.50; 2,2′-(NO₂)₂, 6.28; 4,4′(NO₂)₂, 5.13; 2,2′, 4,4′-(NO₂)₂Me(MeO), 6.47; 2,2′,4,4′-(NO₂)₂Me(MeO), 6.79. The aryl group introduced at the N atom of PhNH₂ tended to disperse the effects of conjugation of the NH₂ group among the aromatic nuclei. Diphenylamines with groups m both Ph rings showed the competing effect of these rings with the unshared electron pair of the central N atom, manifested by a neg. moment of group interaction as estimated from the dipole moments.

Zhurnal Obshchei 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, Name: Bis(4-nitrophenyl)amine.

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

Nazari, Behzad published the artcileReliable prediction of the condensed (solid or liquid) phase enthalpy of formation of organic energetic materials at 298 K through their molecular structures, Application of Bis(4-nitrophenyl)amine, the publication is Fluid Phase Equilibria (2016), 248-258, database is CAplus.

A reliable new method is introduced to predict the condensed (solid or liquid) phase enthalpy of formation of organic energetic materials (at 298 K). This model is based on some additive and non-additive functions, which are based on elemental composition and some mol. fragments. The novel correlation is constructed on the basis of exptl. data of 222 organic compounds containing different types of energetic bonds such as -O-O-, -N₃, -ON=O, -NO₂, -ONO₂ and -NNO₂. For 144 compounds of this set, where the best available group additivity method can be used, the root mean square (rms) deviations of the new and group additivity methods from exptl. data are 31.0 and 68.2 kJ/mol, resp. For further 77 energetic compounds, where the computed results of quantum mech. methods for simple organic energetic compounds were available and the best available group additivity method for some complex mols. can be applied, the rms deviations of the new, quantum mech. (54 compounds) and group additivity (51 compounds) methods from the measured data are 35.9, 42.1 and 170.6 kJ/mol, resp.

Fluid Phase Equilibria 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, Application of Bis(4-nitrophenyl)amine.

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

Patil, Nandkumar M. published the artcileNovel cuprous iodide-tributylphosphine catalyst system for amination of aryl chlorides, Product Details of C12H9N3O4, the publication is Chemical Communications (Cambridge, United Kingdom) (2003), 2460-2461, database is CAplus and MEDLINE.

A simple and efficient methodol. for the synthesis of triarylamines from aryl chlorides in a single step was demonstrated using a novel cuprous iodide-tributylphosphine catalyst system with high activity and selectivity (80-87% yield).

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, Product Details of C12H9N3O4.

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

Zhang, Xin published the artcileSynthesis of bismaleimides bearing electron-donating chromophores and their fluorescence behavior during copolymerization, Application of Bis(4-nitrophenyl)amine, the publication is Macromolecules (2003), 36(9), 3115-3127, database is CAplus.

Bismaleimides and bisitaconimides bearing diphenylmethylamine, triphenylamine, or 2,5-diphenyl-1,3,4-oxadiazole chromophores (symbolized as A₍₌₎-D_(x)-A₍₌₎), as well as their saturated model compounds were synthesized, and their steady-state and time-resolved fluorescence spectra were investigated. These A₍₌₎-D_(x)-A₍₌₎ monomers display strong intramol. fluorescence quenching. Their fluorescence quantum yields and lifetimes are generally lower than those of their model compounds It was found that the electron-poor C:C bond of maleimide and itaconimide units (A₍₌₎) plays a key role in the intramol. quenching, which is correlated to the electron-accepting ability of A₍₌₎ and the geometry arrangement between A₍₌₎ and electron-donating chromophore (D_(x)). The intramol. quenching was attributed to an intramol. charge transfer interaction, which was confirmed by intermol. fluorescence quenching and time-resolved fluorescence studies. On the basis of the intramol. quenching, a new fluorescence approach can be developed to monitor the process of the polymerization and curing of bismaleimides, which can directly reflect the C:C bond consumption during polymerization and curing. The new fluorescence approach can be utilized not only by an intrinsic fluorescence technique but also by an extrinsic fluorescence technique.

Macromolecules 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 C15H15OP, Application of Bis(4-nitrophenyl)amine.

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

Haga, Kazuo published the artcileCondensation of 1,4-cyclohexanediones and secondary aromatic amines. II. N-phenylation of diarylamines, Category: catalysis-chemistry, the publication is Bulletin of the Chemical Society of Japan (1986), 59(3), 803-7, database is CAplus.

Condensations of 1,4-cyclohexanedione with diphenylamines were investigated to determine the limit of the reaction for the N-phenylation of aromatic secondary amines. 4-Ethoxy-, 4,4′-dimethyl-, and 4,4′-dibromodiphenylamines gave their N-phenylated compounds in 65-94% yields, but 4-hydroxy-, 3-ethoxy-, and 4,4′-bis(dimethylamino)diphenylamines gave poor yields. Nitro-substituted diphenylamines gave N-Ph derivatives in low yields along with N-4-hydroxyphenyl derivatives N,N‘-Diphenyl-p-phenylenediamine and N,N‘-diphenylbenzidine gave the corresponding tetra-N-Ph derivatives in 78-80% yields. The condensation of N-phenyl-1-naphthylamine, N-phenyl-2-naphthylamine, di-2-pyridiylamine, phenothiazine, and carbazole with 1,4-cyclohexanedione also were examined

Bulletin of the Chemical Society of Japan 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.

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

Brownlie, I. T. published the artcileInhibited autoxidation of styrene. VI. Relative efficiencies and the kinetics for inhibition by N-aryl anilines- and N-alkylanilines, HPLC of Formula: 1821-27-8, the publication is Canadian Journal of Chemistry (1967), 45(20), 2419-25, database is CAplus.

The kinetics and D isotope effects for the N-aryl aniline- and N-alkylaniline-inhibited autoxidation of styrene indicate that the rate-controlling step for inhibition involves abstraction of the amino H by a peroxy radical. The rate constants for this reaction were correlated by means of the Hammett equation with the ¦Ò+ constants of the substituents for diphenylamines (¦Ñ = -0.89) and N-methylanilines (¦Ñ = -1.6). A numerical difference involving a factor of 2 between the simple kinetic expression applicable to most aromatic amine inhibitors and the expression applicable to most phenols and p-phenylenediamines is suggested. The important role played by the substrate in studies of inhibitor action is emphasized. 25 references.

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 C12H9N3O4, HPLC of Formula: 1821-27-8.

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