49764-63-8

Usage

Uses

Used in Dye and Pigment Production:
4,5-DibroMo-1,2-phenylenediaMine is used as an intermediate in the production of dyes and pigments for various applications due to its chemical properties that facilitate color development and stability.
Used in Hair Dye Industry:
In the hair dye industry, 4,5-DibroMo-1,2-phenylenediaMine is used as a colorant to provide a range of shades and tones. Its strong oxidizing properties contribute to the effectiveness of hair coloring processes.
Used in Pharmaceutical Production:
4,5-DibroMo-1,2-phenylenediaMine is utilized as a building block in the synthesis of certain pharmaceuticals, where its chemical structure plays a crucial role in the development of active ingredients for various medications.
Safety and Handling:
Due to its strong oxidizing and skin sensitizing properties, 4,5-DibroMo-1,2-phenylenediaMine requires careful handling and adherence to safety protocols. It is classified as a hazardous substance, necessitating proper storage and usage in accordance with safety regulations and guidelines to minimize health and environmental risks.

Upstream product

• 54558-18-8 1,2-dinitro-4,5-dibromobenzene 
• 88617-67-8 N-[4,5-dibromo-2-(p-tolylsulfonylamino)phenyl]-4-methylbenzenesulfonamide 
• 75293-97-9 2-nitro-4,5-dibromoaniline 
• 18392-81-9 5,6‐dibromo‐2,1,3‐benzothiadiazole 
• 179061-90-6 3,4-dibromo-(trifluoroacetamido)benzene 
• 615-55-4 3,4-dibromoaniline 
• 583-53-9 2,3-dibromobenzene 
• 95-54-5 1,2-diamino-benzene 
• 49633-28-5 1,2-bis-(p-methylphenylsulfonamido)-benzene 

Downstream Products

• 74545-26-9 5,6-dibromo-1H-benzo[d]imidazole 
• 1145919-75-0 C₃₄H₄₀N₂S₄ 
• 1145919-78-3 N4,N4,N4”,N4”-tetraphenyl-[1,1’:2’,1”-terphenyl]-4,4’,4”,5’-tetraamine 
• 129365-93-1 4,5-diaminophthalonitrile 
• 1196131-61-9 5,6-dibromo-2-(4-fluorophenyl)-1H-benzimidazole 
• 1417875-27-4 5,6-bis(3,4-bis(dodecyloxy)phenyl)benzo[c][1,2,5]thiadiazole 
• 1429780-59-5 1,2-bis(2-acetylbenzamido)-4,5-bis(2,5-dimethylthiophene-3-yl)-benzene 
• 1429780-60-8 1,2-bis(2-hydroxybenzamido)-4,5-bis(2,5-dimethylthiophene-3-yl)-benzene 
• 1429780-62-0 1,2-bis(ethyloxamato)-4,5-bis(2,5-dimethylthiophene-3-yl)-benzene 
• 1429780-58-4 4,5-bis(2,5-dimethylthiophen-3-yl)benzene-1,2-diamine 

Relevant academic research and scientific papers

Charge transport in phenazine-fused triphenylene discotic mesogens doped with CdS nanowires

Herein, we report the synthesis of oleylamine-capped CdS nanowires (NWs) and the dispersion of a small optimized amount of these NWs in the Colhphase of a recently synthesized phenazine-fused-triphenylene discotic liquid crystal (PFT DLC) to un

Preparation method of 5,6-bis(4-aminobenzyl)-1-methyl-2-phenyl benzimidazole

The invention relates to a preparation method of 5,6-bis(4-aminobenzyl)-1-methyl-2-phenyl benzimidazole, belongs to the technical field of chemical synthesis, and aims to provide a method for preparing 5,6-bis(4-aminobenzyl)-1-methyl-2-phenyl benzimidazole by respectively performing methyl substitution and phenyl substitution at the 1-position and the 2-position of benzimidazole. The target product is prepared through four steps of dehydration condensation, nucleophilic addition, Suzuki coupling and palladium-carbon reduction. The preparation method disclosed by the invention is simple and high in yield.

Synthesis, mesomorphic properties and nonlinear optical studies of alkyl and alkoxy phenylacetylene containing phenazine fused extended triphenylene discotic liquid crystalline dyes

Herein, we have reported the alkyl and alkoxy phenylacetylene containing phenazine fused triphenylene discotic liquid crystals (DLCs) which are obtained by the condensation reaction of triphenylene-1,2-diquinone with 1,2-diamino-4,5-dibromobenzene, followed by Sonogashira C–C coupling reaction with 4-alkyl-phenylacetylene or 4-alkoxy-phenylacetylene. Six novel derivatives were synthesized and evaluated for their thermal and optical properties. They show a broad range of hexagonal columnar phase and retain their mesophase up to room temperature upon cooling from the isotropic liquid. Thermotropic liquid crystalline properties of all the compounds were studied by polarised optical microscopy (POM), differential scanning calorimetry (DSC). The self-assembly of mesophase structure was investigated by X-ray diffraction (XRD) studies. Thermogravimetric analysis of all the mesogens shows good thermal stability over a broad temperature range. The photophysical properties of newly synthesized compounds were measured using UV–Vis absorption and photoluminescence emission spectroscopy in anhydrous chloroform solvent. The π-extended conjugation in these mesogens exhibit strong absorption bands falling around 270–487 nm and corresponding emission band at 657–663 nm respectively. The high delocalization of π– electrons in extended discotic mesogens show high nonlinear optical properties when measured under excitation by nanosecond laser pulses at 532 nm. These materials may find distinctive applications in the semiconducting devices.

Total synthesis of kealiiquinone: the regio-controlled strategy for accessing its 1-methyl-4-arylbenzimidazolone core

A practical, concise and straightforward total synthesis of kealiiquinone 1, a naphtho[2,3-d]imidazole alkaloid obtained from the Micronesian marine sponge Leucetta sp. was accomplished. The squaric acid chemistry to construct the 1,4-quinoid ring and the regioselective N-methylation through a benzo[c][1,2,5]selenadiazolium heterocycle are the key features in this report. The full details of the representative approaches involving the different attempted synthetic strategies are also presented. Finally a successful total synthesis of this complex secondary metabolite is described.

Multinuclear Phthalocyanine-Fused Molecular Nanoarrays: Synthesis, Spectroscopy, and Semiconducting Property

The post-cyclization strategy rather than the conventional ante-cyclotetramerization method was employed for the synthesis of multinuclear phthalocyanine-fused molecular nanoarrays. Reaction of 2,3,9,10,16,17-hexakis(2,6-dimethylphenoxy)-23,24-diaminophth

CYANATED NAPHTHALENEBENZIMIDAZOLE COMPOUNDS

The present invention relates to cyanated naphthalenebenzimidazole compounds of the formula (I) and mixtures thereof, in which R1, R 2, R 3, R 4, R5, R6, R7, R8, R9 and R10 are each independently hydrogen, cyano or aryl which is unsubstituted or has one o

Photodriven Multi-electron Storage in Disubstituted RuII Dppz Analogues

Four derivatives of the laminate acceptor ligand dipyrido-[3,2-a:2′,3′-c]phenazine (dppz) and their corresponding ruthenium complexes, [Ru(phen)2(dppzX2)]2+, were prepared and characterized by NMR spectroscopy, ESI-MS, and elemental analysis. The new ligands, generically denoted dppzX2, were symmetrically disubstituted on the distal benzene ring to give 10,13-dibromodppz (dppz-p-Br), 11,12-dibromodppz (dppz-o-Br), 10,13-dicyanodppz (dppz-p-CN), 11,12-dicyanodppz (dppz-o-CN). Solvated ground state MO calculations of the ruthenium complexes reveal that these electron-withdrawing substituents not only lower the LUMO of the dppz ligand (dppz(CN)22dppz), but that the para disubstitution results in a lower LUMO than the ortho disubstitution (dppz-p-CN(dppz-o-CN), and dppz-p-Brdppz-o-Br). The validity of the calculations was confirmed experimentally using cyclic voltammetry. Of the complexes evaluated in this study, only the dicyanodppz complexes showed multiple dppz-based reductions prior to reduction of the phen ligands. The capacity to form singly and doubly reduced dppz-based anions at modest reduction potentials was confirmed using a combination of spectroelectrochemical and chemical titration methods. When subjected to photolysis with visible light in the presence of a sacrificial donor, such as triethylamine, both cyano complexes showed multi-electron reduction. The other complexes only show a single reduction.

Formation of one-dimensional helical columns and excimerlike excited states by racemic quinoxaline-fused [7]carbohelicenes in the crystal

A series of quinoxaline-fused [7]carbohelicenes (HeQu derivatives) was designed and synthesized to evaluate their structural and photophysical properties in the crystal state. The quinoxaline units were expected to enhance the light-emitting properties an

Columnar mesomorphism of fluorescent board-shaped quinoxalinophenanthrophenazine derivatives with donor-acceptor structure

Quinoxalino[2′,3′:9,10]phenanthro[4,5-abc]phenazine (QPP) dyes have been studied as electron acceptor materials, fluorophores, and building blocks for self-organizing organic semiconductors. Condensation of tetraketopyrene with electron-rich diamino-terphenylene and -triphenylene derivatives generates new donor-acceptor QPP derivatives that display columnar mesomorphism over wide ranges of temperature; are fluorescent in solution, liquid crystal, and solid phases; and have electron acceptor properties. Also reported are the synthesis and properties of the first diamino-(tetraalkoxy) triphenylene as a valuable new synthon.

Tetraanionic N2O2-coordinating ligands as potential building blocks for supramolecular magnetic networks

A bisoxamate ligand containing three different types of coordination sites was designed and synthesized. The developed synthetic strategy was adopted to prepare a related 1,2-bis(2-hydroxybenzamido)benzene-derived ligand. Nickel(ii) complexes of both the