20246-81-5

Usage

Uses

Used in Dye and Pigment Production:
4,4'-Dinitrodiphenic acid is used as a key intermediate in the synthesis of dyes and pigments, contributing to the development of colorants with specific properties for various applications.
Used in Pharmaceutical Industry:
In the pharmaceutical sector, 4,4'-Dinitrodiphenic acid is utilized as a precursor for the synthesis of certain drugs, leveraging its chemical reactivity and functional groups to create medicinal compounds.
Used in Organic Synthesis:
4,4'-Dinitrodiphenic acid serves as an intermediate in the synthesis of a variety of organic compounds, taking advantage of its strong acidic nature and aromatic structure to form highly functionalized molecules.
Used in Explosive Manufacturing:
4,4'-Dinitrodiphenic acid is used in the production of explosives due to its chemical properties that make it suitable for such applications, ensuring the necessary reactivity for these products.
Used in Corrosion Inhibition Studies:
4,4'-Dinitrodiphenic acid has been studied for its potential as a corrosion inhibitor, indicating its use in applications where preventing the degradation of materials is crucial, such as in the protection of metal surfaces in industrial settings.

Upstream product

• 2516-96-3 2-chloro-5-nitrobenzoic acid 
• 26513-20-2 N,N-diethyl-1,3-benzenediamine 
• 90-14-2 1-Iodonaphthalene 
• 112239-00-6 methyl 2-iodo-5-nitrobenzoate 
• 604-94-4 2,7-dinitro-phenanthrene-9,10-dione 
• 23305-76-2 dimethyl 4,4’-dinitro-2,2’-biphenyldicarboxylate 
• 863305-32-2 diphenic acid 
• 62245-44-7 2,2'-diformyl-4,4'-dinitrobiphenyl 
• 7664-93-9 sulfuric acid 
• 85-01-8 phenanthrene 
• 121-92-6 3-nitrobenzoic acid 
• 1210-05-5 Biphenyl-2,2'-dicarbaldehyde 
• 943-14-6 2-bromo-5-nitrobenzoic acid 
• 6942-36-5 methyl 2-bromo-5-nitrobenzoate 

Downstream Products

• 351195-58-9 bis{ω-[4-(4-cyanophenyl)phenoxy]hexyl}4,4'-dinitro-biphenyl-2,2'-dicarboxylate 
• 922139-59-1 4,4'-diiodo-2,2'-bis[5-phenyl-(1,3,4)-oxadiazol-2-yl]biphenyl 
• 922139-70-6 4,4'-diiodo-(N',N'''-dibenzoyl)diphenic acid dihydrazide 
• 149935-34-2 dimethyl 4,4’-diamino-2,2’-biphenyldicarboxylate 
• 62925-34-2 2,7-dinitro-5,10-dioxo-4,5,9,10-tetrahydro-4,9-dioxapyrene 
• 1429526-40-8 4-{(1E)-3-[(2’-{[(3E)-4-(4-{[4-(3-nitrilepropoxy)benzoyl]oxy}phenyl)-2-oxobut-3-enyl]oxy}-4,4’-dinitro-1,1-biphenyl-2-yl)methoxy]-3-oxoprop-1-enyl}phenyl 4-(3-nitrilepropoxy)benzoate 
• 5047-02-9 4,4’-dinitro-1,1‘-biphenyl-2,2’-dimethanol 
• 351195-57-8 bis{ω-[4-(4-cyanophenyl)phenoxy]hexyl} 4,4'-diamino-biphenyl-2,2'-dicarboxylate 
• 710327-95-0 [4,4'-dinitro-2'-(1,4,7,10,13-pentaoxa-16-aza-cyclooctadecane-16-carbonyl)-biphenyl-2-yl]-(1,4,7,10,13-pentaoxa-16-aza-cyclooctadec-16-yl)-methanone 
• 17557-76-5 4,4'-diamino-[1,1'-biphenyl]-2,2'-dicarboxylic acid 
• 27007-55-2 4,4'-dinitro-2,2'-diphenic acid anhydride 

Relevant academic research and scientific papers

Preparation, Characterization, and Molecular Structure of Two New Heat-Resistant Energetic Compounds

In this paper, nitration of 2,2'-diphenic acid was studied and two aromatic carboxylic acids containing two and four nitro groups, respectively, were synthesized and characterized through elemental analysis, IR spectra, respectively. Crystal structure of 4,4'-dinitro-2,2'-diphenic acid and 4,4',6,6'-tetranitro-2,2'-diphenic acid was determined by X-ray single crystal diffraction and their thermal decomposition have been carried out through differential scanning calorimeter analyses at a heating rate of 10°C/min. The results indicate that the compounds have high heat-resistant stability.

2,2′-Biaryldicarboxylate Synthesis via Electrocatalytic Dehydrogenative C-H/C-H Coupling of Benzoic Acids

2,2′-Biaryldicarboxylates are important functionalities in bioactive compounds, functional materials, and chiral catalysts. These compounds have been found to be conveniently accessible from benzoic acids via Rh-catalyzed electrooxidative C-H/C-H couplings, giving valuable dihydrogen as the byproduct. In an undivided cell with Pt electrodes, RhCl3·3H2O catalyzes the oxidative carboxylate-directed ortho-homocoupling of various aromatic acids with a current efficiency of 67%. The protocol is operationally simple, tolerates a wide variety of functional groups, and does not require the exclusion of air and moisture. Heterodimerizations via cross-dehydrogenative couplings of naphthyl-1-carboxylic acids with acrylic or benzoic acids were also shown to work.

Absolute Configuration Assignment from Optical Rotation Data by Means of Biphenyl Chiroptical Probes

A non-empirical approach for the assignment of the absolute configuration of chiral 2-alkyl-substituted carboxylic acids and primary amines by [α]D measurements has been developed. The method requires the conversion of the chiral acids or amines into the corresponding 4,4′-disubstituted biphenylamides or biphenylazepines, respectively. In these derivatives a central-to-axial chirality transfer induces a preferred torsion in the biphenyl moiety revealed by the sign of the biphenyl A band in the ECD spectrum. By 4,4′-substitution on the biphenyl moiety a redshift of the A band is obtained, leading to an increase of its relative contribution to optical rotation. This allows to reliably establish a direct correlation between the [α]D sign, the biphenyl twist and, then, the substrate absolute configuration. This approach thus constitutes a really practical and reliable method to assign the absolute configuration of chiral carboxylic acids and primary amines by simple and straightforward [α]D measurement, readily obtainable by a routine instrumentation like the polarimeter.

PHOTOALIGNING MATERIALS

The present invention relates to polymer, homo- or copolymer or oligomer for the photoalignment of liquid crystals, especially for the planar orientation of liquid crystals, comprising a main chain and a side chain, wherein the side chain and/or main chain comprises a polar group, compositions thereof, and its use for optical and electro optical devices, especially liquid crystal devices (LCDs).

PHOTOALIGNING MATERIALS

The present invention relates to polymer, homo- or copolymer or oligomer, which, when irradiated with polarised light orients perpendicular to the polarization direction of polarized actinic light, for the photoalignment of liquid crystals, especially for the planar orientation of liquid crystals, and which derives from at least one monomer (I), compositions thereof, and its use for optical and electro optical devices, such as, liquid crystal devices (LCDs), especially for planar orientation of liquid crystals.

PHOTOALIGNING MATERIAL

The present invention relates to a copolymer for the photoalignment of liquid crystals comprising a photoreactive group as given below in formula (I), compositions thereof, and its use for optical and electro optical devices, especially liquid crystal dev

Organocatalytic aerobic oxidative cleavage of cyclic 1,2-diketones

The first organocatalytic aerobic oxidative cleavage of cyclic 1,2-diketones is reported. The reaction occurs in either aqueous or alcoholic media and is promoted by a simple N-heterocyclic carbene catalyst derived from a 1,2,4-triazolium ion. No strong oxidants are required. The application of the process in a one-pot synthesis of a cyclic anhydride is also possible. Georg Thieme Verlag Stuttgart. New York.

PHOTOCROSSLINKABLE MATERIALS COMPRISING ALICYCLIC GROUP

A diamine compound of formula (I) is proposed as well as polymers, copolymers, polyamic acids, polyamic acid esters, or polyimides based on such compound.

The unusual electrochemical and photophysical behavior of 2,2′-bis(1,3,4-oxadiazol-2-yl)biphenyls, effective electron transport hosts for phosphorescent organic light emitting diodes

(Chemical Equation Presented) The fluorescence and phosphorescence of 2,2′-bis(5-phenyl-1,3,4-oxadiazol-2-yl)biphenyl shows good spectral matching with the absorption spectra of the MLCT1 and MLCT 3 transitions of Ir(ppy)3