20432-10-4

Basic information

• Product Name: (E)-1,2-Dibromo-1,2-diphenylethene
• Synonyms: (E)-1,2-Dibromo-1,2-diphenylethene;(E)-α,β-Dibromostilbene;Nsc244459
• CAS NO: 20432-10-4
• Molecular Formula: C₁₄H₁₀Br₂
• Molecular Weight: 338.0372
• Mol File: 20432-10-4.mol
• Article Data: 20

Chemical Properties

• Boiling Point: 366°Cat760mmHg
• Flash Point: 204.5°C
• Appearance: /
• Density: 1.643g/cm³
• CAS DataBase Reference: (E)-1,2-Dibromo-1,2-diphenylethene(CAS DataBase Reference)
• NIST Chemistry Reference: (E)-1,2-Dibromo-1,2-diphenylethene(20432-10-4)
• EPA Substance Registry System: (E)-1,2-Dibromo-1,2-diphenylethene(20432-10-4)

Safety Data

• Hazardous Substances Data: 20432-10-4(Hazardous Substances Data)

Usage

General Description

"(E)-1,2-Dibromo-1,2-diphenylethene" is a chemical compound with the molecular formula C14H10Br2. It is a colorless to light yellow crystalline solid that is insoluble in water. (E)-1,2-Dibromo-1,2-diphenylethene is often used as a building block in organic synthesis and as a precursor to other organic compounds. It is also known for its role as a model compound for studying photochemical reactions and radical reactions. Additionally, it is a common reagent in the preparation of various pharmaceuticals and agrochemicals. However, it is important to handle this compound with caution as it is toxic and may cause irritation to the skin, eyes, and respiratory system.

Upstream product

• 501-65-5 diphenyl acetylene 
• 2489-03-4 tribromomethylbenzene 
• 108-88-3 toluene 
• 79-15-2 N-bromoacetamide 
• 13440-24-9 1,2-dibromo-1,2-diphenylethane 
• 4541-89-3 2-chloro-1,1-diphenylethene 
• 15219-34-8 Oxalyl bromide 
• 3469-17-8 2-diazo-1,2-diphenylethan-1-one 
• 67-56-1 methanol 
• 103-29-7 1,1'-(1,2-ethanediyl)bisbenzene 
• 588-59-0 stilbene 
• 151416-94-3 (Z)-2,2'-[1,2-(biphenyl)eth-1-ene-1,2-diyl]bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolane) 

Downstream Products

• 501-65-5 diphenyl acetylene 
• 882-33-7 diphenyldisulfane 
• 134-81-6 benzil 
• 5088-12-0 acetic acid-(α'-bromo-stilben-α-yl ester) 
• 92-52-4 biphenyl 
• 25044-96-6 bis(triphenylphosphine)palladium dibromide 
• 27435-08-1 (E)-bis(trimethylstannyl)stilbene 
• 16387-72-7 tetradeca-6,8-diyne 
• 2450-55-7 diphenyl fumarodinitrile 
• 661-69-8 hexamethyldistannane 
• 1212-08-4 S-Phenyl benzenethiosulfonate 
• 98-11-3 benzenesulfonic acid 

Relevant articles and documents

Graphene nanoribbons from tetraphenylethene-based polymeric precursor: Chemical synthesis and application in thin-film field-effect transistor

Graphene nanoribbons (GNRs) with a non-zero bandgap are regarded as a promising candidate for the fabrication of electronic devices. In this study, large-scale solution synthesis of narrow GNRs was firstly achieved by the intramolecular cyclodehydrogenati

Ladder-type conjugated oligomers prepared by the Scholl oxidative cyclodehydrogenation reaction: Synthesis, characterization and application in field effect transistors

Two novel well defined ladder-type conjugated oligomers have been successfully designed and synthesized through a solution processing method in an excellent yield. The field effect transistors (FETs) fabricated by these ladder-type oligomers with a nice planar structure exhibit excellent charge carrier mobilities, up to 0.10 cm2 V-1 s-1 and 0.33 cm2 V-1 s-1; furthermore, the devices can work well with a low gate voltage. The ladder-type oligomers are both converted from two precursor co-oligomers, poly(2,7-(1,2,-diphenylethene)-9,9-dioctylfluorene) (PDPF), via an anhydrous FeCl3 oxidative cyclodehydrogenation. The pronounced red shift shown in the preliminary photoluminescence spectra and the changes of band gaps measured by electrochemical analysis both testify that the better electronic transmission capacity in the FET performance is due to the expanded molecular chain planarization after the chemical cyclodehydrogenation. Interestingly, the precursor oligomers having a linear-type chain and a zigzag-type chain (L-PDPF and Z-PDPF, respectively) show many characteristic differences in their thermal, optical and electrochemical properties. The differences caused by the different types of main chains demonstrate that the macromolecular configurations have a tremendous impact on the functioning of the oligomers.

Sequential bromination reactions from beads with methyltriphenylphosphonium tribromide groups

A reusable bromination reagent based on polystyrene beads with covalently appended methyltriphenylphosphonium tribromide groups has been developed. The results from bromination reactions of several structurally diverse unsaturated substrates with the beads and with solutions of a non-polymeric model brominating reagent, methyltriphenylphosphonium tribromide, are described. It is shown that the reactions are highly regio- and stereo-selective and can be conducted easily. Copyright