2055-56-3

Usage

Usage

Dye intermediate in the production of hair dyes, colorants for textiles, and cosmetics

Physical state

Yellow to brown crystalline solid

Solubility

Insoluble in water

Hazard classification

Classified as a hazardous substance

Health hazards

Can cause skin and eye irritation

Inhalation hazards

Can cause respiratory and digestive tract irritation if inhaled

Ingestion hazards

Can cause digestive tract irritation if ingested

Safety precautions

Handle and use with caution, following safety regulations

Upstream product

• 127-09-3 sodium acetate 
• 88-73-3 2-Chloronitrobenzene 
• 95-54-5 1,2-diamino-benzene 
• 18264-71-6 bis(2-nitrophenyl)amine 
• 1493-27-2 ortho-nitrofluorobenzene 
• 577-19-5 2-nitrophenyl bromide 
• 88-74-4 2-nitro-aniline 
• 2217-65-4 bis(2-nitrophenyl)ether 

Downstream Products

• 2229-36-9 1-(2-nitrophenyl)-1H-benzo[d][1,2,3]triazole 

Relevant academic research and scientific papers

Organic electrophosphorescent material and application thereof

The invention relates to the technical field of organic electroluminescent display, particularly discloses a novel organic electrophosphorescent material, and also discloses an application of the novel organic electrophosphorescent material in an organic light-emitting device. The organic electrophosphorescent material provided by the invention has a structure as shown in a general formula (I) inthe specification. The organic electrophosphorescent material disclosed by the invention is applied to the organic light-emitting device, and the prepared light-emitting device shows excellent performances of high purity, high brightness and high efficiency.

COMPOUND, ORGANIC OPTOELECTRIC DEVICE AND DISPLAY DEVICE

The present invention relates to a compound, an organic optoelectronic device including the same, and a display apparatus including the same organic optoelectronic device. The present invention provides the compound which is represented by Chemical Formula 1 (In Chemical Formula 1, definitions of Ar, X, R1, and R2 are same as defined in the specification). The compound can be used for providing the organic optoelectronic device having properties such as high efficiency and a long life span.COPYRIGHT KIPO 2015

Reduction of polyfunctional aromatic nitro compounds using lithium aluminium hydride

Aromatic nitro compounds containing yet another functional group are reduced using lithium aluminium hydride in ether. The reduction of nitrobenzanilides results in preferential reduction of amide functionality while the isomeric N-(nitrophenyl) benzamides results in preferential cleavage of the amide bond. Besides, the reduction of 2,2′-dinitrodiphenyl amine 5a, reduction of (bis-2-nitroanilino) methane 5b, 2,2′ -dinitrodiphenylether 5c, 2-nitrophenyl-2′-nitrophenoxymethane 5d, 1,3-dinitrobenzene 6a, 2-nitrobenzaldoxime 6b, 2-N(2′-nitrophenylmethyl) amino benzoic acid 6c, 2-nitrophenoxymethyl phenyl ketone 6d are carried out. Nitro group is found reluctant towards reduction in some cases whereas in some others it is reduced into different extents. This points to the limitation of the suggested azo test for aromatic nitro compounds.

The Reduction of Some 2,2'-Dinitrodiaryl Compounds and Related Compounds by Thiourea S,S-Dioxide (Formamidinesulfinic Acid)

The reaction of thiourea S,S-dioxide (formamidinesulfinic acid) in ethanolic alkali with 2,2'-dinitrobiphenyl and several related dinitro compounds possessing an-X-bridge (where X = NH, NMe, O and S), located at the 1,1'-positions, has been investigated.With 2,2'-dinitrobiphenyl (which gives good yields of benzocinnoline and its oxides) and, to a minor extent, with 2,2'-dinitrodiphenylamine, an intramolecular reaction occured to give heterocyclic products; with each of the other dinitro compounds, the only product obtained was formed as the result of a Smiles rearrangement.

ELECTROCHEMICAL REDUCTION OF 2,2'-DINITRODIPHENYL ETHER AND 2,2'-DINITRODIPHENYLAMINE AT MERCURY CATHODES

2,2'-Dinitrodiphenyl ether (I) is reduced at less negative potentials than 2,2'-dinitrodiphenylamine (II); the respective mechanisms of their reduction differ essentially. (I) is electrolytically reduced in a single wave with an uptake of eight electrons per molecule, giving rise to a bishydroxylamine intermediate which undergoes an intramolecular disproportionation.The resulting 2-nitroso-2'-amino-diphenyl ether undergoes a chemical follow-up reaction leading on the one hand to dibenzo--(1,4,5)-oxadiazepine, on the other hand to a diphenylamine product (resulting by a chemical rearrangement) which reacts with reductants present in the solution and yields dihydrophenazine.It is merely by chance that in the electrolytical reduction of II dihydrophenazine also results in addition to other products. 2,2'-dinitrodiphenylamine (II) enables here, however, a partial electrolytical reduction in which 2-amino-2'-nitrodiphenylamine is formed in a single 6-electron wave.In the following, more negative wave, is clearly separated only in alkaline media, the other nitro group reduces with an uptake of 4 electrons to an intermediate which eliminates the hydroxylamine group with the corresponding electron pair.The subsequent chemical reaction leads to dihydrophenazine.This substance is the reduced form of an chemically and electrochemically reversible system, this system participates in the chemical reaction of reaction intermediates.Its regeneration readily proceeds at potentials more positive than the reduction potential of II.Phenazine is oxidized in the catholyte by the hydroxylamine set free to phenazine N-oxide.Nitrogen is thus eliminated in its elemental form via hydroxylamine from the substrate molecule.