590-12-5

Basic information

• Product Name: 1,2-DIBROMOETHYLENE
• Synonyms: trans-1,2-Dibromoethylene;Ethene, 1,2-dibromo-, (1E)-
• CAS NO: 590-12-5
• Molecular Formula: C₂H₂Br₂
• Molecular Weight: 185.86
• Mol File: 590-12-5.mol
• Article Data: 6

Chemical Properties

• Melting Point: -6.5°C
• Boiling Point: 120.76°C (estimate)
• Flash Point: °C
• Appearance: /
• Density: 2.2308
• Refractive Index: 1.5505
• CAS DataBase Reference: 1,2-DIBROMOETHYLENE(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2-DIBROMOETHYLENE(590-12-5)
• EPA Substance Registry System: 1,2-DIBROMOETHYLENE(590-12-5)

Safety Data

• Hazardous Substances Data: 590-12-5(Hazardous Substances Data)

Usage

Physical state

Colorless liquid

Uses

a. Intermediate in the synthesis of other chemicals
b. Used in the production of pharmaceuticals and agrochemicals
c. Solvent in organic synthesis
d. Reagent in organic synthesis

Toxicity

Harmful if swallowed, inhaled, or in contact with skin

Carcinogenic properties

Potential carcinogen

Safety precautions

a. Handle with care in a well-ventilated area
b. Use appropriate personal protective equipment

Environmental impact

Potential environmental pollutant

Disposal

Dispose of properly according to regulations

Upstream product

• 95497-36-2 cis-1-bromo-2-iodo-ethene 
• 10547-07-6 dibromoketene 
• 56-23-5 tetrachloromethane 
• 590-11-4 (Z)-1,2-dibromo-ethene 
• 7726-95-6 bromine 
• 74-86-2 acetylene 
• 79-27-6 1,1,2,2-tetrabromoethane 

Downstream Products

• 161828-39-3 Ethyl 7-[4'-fluoro-5,6-dimethoxy-3-(propan-2-yl)-biphenyl-2-yl]-3,5-O-cyclohexylidene-3,5,7-trihydroxyheptanoate 
• 18715-38-3 trans-1,4-dicyano-2-butene 
• 120017-11-0 (E)-1,8-Diphenyl-oct-4-ene-2,6-diyne-1,8-diol 
• 13305-02-7 trans-1,6-Bis(phenyl)hexa-1,5-diyn-3-ene 
• 92787-96-7 (E)-1,6-hex-3-ene-1,5-diyne 
• 107646-62-8 (E)-(4-bromo-but-3-en-1-yn-1-yl)trimethylsilane 

Relevant articles and documents

Macamides and their synthetic analogs: Evaluation of in vitro FAAH inhibition

Maca (Lepidium meyenii), a traditional food crop of the Peruvian Andes is now widely touted as a dietary supplement. Among the various chemical constituents isolated from the plant are a unique series of non-polar, long-chain fatty acid N-benzylamides known as macamides. We have synthesized 11 of the 19 reported macamides and have tested each as potential inhibitors of the human enzyme, fatty acid amide hydrolase (FAAH). The five most potent macamides were FAAH inhibitors (IC50 = 10-17 μM). These amides were derivatives of oleic, linoleic and linolenic acids and benzylamine or 3-methoxybenzylamine. Of the three compounds evaluated in a pre-incubation time study, two macamides were not irreversible inhibitors of FAAH. The third, a carbamate structurally related to macamides, was shown to be an irreversible inhibitor of FAAH (IC50 = 0.153 μM).

Analysis of spectral parameters of trans- and cis-silyl substituted 1,2-dihalogenoethenes including one-bond CC spin-spin coupling constants across double bonds

Some trans- and cis-1-trialkylsilyl-1,2-dihalogenoethenes have been synthesized and their 13C and 1H NMR spectra recorded.The compounds studied readily undergo reversible cis-trans isomerization, the cis isomers being thermodynamically more stable than the trans isomers.The value of 3J(SiHα)trans is about twice as large as that of 3J(SiHα)cis, and the values of 2J(CβHα)trans is about one-tenth that of 2J(CβHα)cis and this allows ready assignment of the configuration.The one-bond spin-spin coupling constants between the ethylenic carbons depend on the electronegativities of the substituents, trans 1J(C=C) in most cases being larger than 1J(C=C)cis.