31458-17-0

Basic information

• Product Name: 4,4'-Dibromo-2,2'-dimethylbiphenyl
• Synonyms: 4,4'-Dibromo-2,2'-dimethylbiphenyl;5,5'-dibromo-2,2'-dimethyl-1,1'-biphenyl
• CAS NO: 31458-17-0
• Molecular Formula: C₁₄H₁₂Br₂
• Molecular Weight: 340.05308
• Mol File: 31458-17-0.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 353.4±37.0 °C(Predicted)
• Appearance: /
• Density: 1.548±0.06 g/cm3(Predicted)
• CAS DataBase Reference: 4,4'-Dibromo-2,2'-dimethylbiphenyl(CAS DataBase Reference)
• NIST Chemistry Reference: 4,4'-Dibromo-2,2'-dimethylbiphenyl(31458-17-0)
• EPA Substance Registry System: 4,4'-Dibromo-2,2'-dimethylbiphenyl(31458-17-0)

Safety Data

• Hazardous Substances Data: 31458-17-0(Hazardous Substances Data)

Usage

General Description

4,4'-Dibromo-2,2'-dimethylbiphenyl is a chemical compound with the molecular formula C14H12Br2. It is a type of biphenyl compound with two bromine atoms attached to the benzene rings at the 4 positions and two methyl groups at the 2 positions. This chemical is commonly used in organic synthesis and in the production of pharmaceuticals and agrochemicals. It is also used as a precursor in the production of liquid crystal materials. Additionally, it has been studied for its potential use in the development of organic light-emitting diodes (OLEDs) and as a flame retardant in polymers. 4,4'-Dibromo-2,2'-dimethylbiphenyl is considered to be a hazardous chemical and should be handled and disposed of according to appropriate safety guidelines.

Upstream product

• 106-38-7 para-bromotoluene 
• 142068-86-8 4,4'-dibromo-2,2'-bis(bromomethyl)-1,1'-biphenyl 
• 84-67-3 2,2'-dimethylbenzidine 
• 621-26-1 3,3'-dimethylhydrazobenzene 
• 99-08-1 1-methyl-3-nitrobenzene 
• 5794-88-7 5-Bromo-2-aminobenzoic acid 
• 636-21-5 o-toluidine hydrochloride 
• 54389-67-2 4,4‘-dibromo-2,2‘-bis(carboxyl)-1,1‘-biphenyl 
• 81747-32-2 4,4'-dibromo-2,2'-bis(methoxycarbonyl)-1,1'-biphenyl 
• 100542-55-0 4,4‘-dibromo-2,2‘-bis(hydroxymethyl)-1,1‘-biphenyl 

Downstream Products

• 61794-66-9 C₇₂H₅₄O₂ 
• 1221066-39-2 C₄₀H₃₂N₂ 
• 117490-51-4 2,2'-dimethylbiphenyl-4,4'-dicarbonitrile 
• 142068-87-9 4,4'-bis<3,3',4,4'-tetramethyl-5,5'-bis(ethoxycarbonyl)-2,2'-dipyrrylmethyl>-2,2'-dimethyl-1,1'-biphenyl 
• 142068-88-0 4,4'-bis(3,3',4,4'-tetramethyl-5,5'-dicarboxy-2,2'-dipyrrylmethyl)-2,2'-dimethyl-1,1'-biphenyl 
• 142068-89-1 4,4'-bis(3,3',4,4'-tetramethyl-2,2'-dipyrrylmethyl)-2,2'-dimethyl-1,1'-biphenyl 

Relevant articles and documents

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Electron transfer in bis-porphyrin donor-acceptor compounds with polyphenylene spacers shows a weak distance dependence

A series of phenylene-bridged bis-porphyrin adducts have been synthesized, containing one, two, or three phenyl bridges. Complete synthetic details are provided. For studies of photochemical electron transfer, mixed metals wre incorporated, with zinc in one porphyrin macrocycle and FeIII (bis-imidazole) in the other macrocycle. When photoexcited, an electron is transferred from Zn to FeIII. The rate of this process drops only slowly with distance: kα exp(βr), with β = 0.4 A?-1. This dependence can be predicted by a simple theory which assumes that the drop does not reflect increased distance, but rather reflects the break in conjugation which occurs at each phenyl juncture due to the biphenyl twist angle of ca. 50°. Inefficient overlap in this angle results in a rate drop of ca. 6-fold per phenyl ring, in good agreement with the observed results.