1,2-Dibromoethylene

Base Information

• Chemical Name: 1,2-Dibromoethylene
• CAS No.: 590-12-5
• Deprecated CAS: 31389-08-9
• Molecular Formula: C2H2Br2
• Molecular Weight: 185.846
• European Community (EC) Number: 208-747-6
• UNII: 64UWX7EBVO
• DSSTox Substance ID: DTXSID3060241,DTXSID001019898
• Nikkaji Number: J2.680H,J2.634D
• Wikipedia: 1,2-Dibromoethylene
• Wikidata: Q27263788
• Mol file: 590-12-5.mol

Synonyms:1,2-DIBROMOETHYLENE;540-49-8;(E)-1,2-Dibromoethene;(E)-1,2-Dibromoethylene;Sym-dibromoethylene;Ethene, 1,2-dibromo-;trans-1,2-Dibromoethene;1,2-Dibromoethene;Ethylene, 1,2-dibromo-;trans-Dibromoethylene;590-12-5;2-Bromovinyl bromide;Acetylene dibromide;trans-1,2-Dibromoethylene;Ethene, 1,2-dibromo-, (E)-;Ethene, 1,2-dibromo-, (1E)-;NSC 8744;CCRIS 2506;1.2-Dibromoethylene;1,2-Dibromoethylene, (1E)-;HSDB 5680;EINECS 208-747-6;UNII-64UWX7EBVO;64UWX7EBVO;BRN 1719351;BRN 1719353;UNII-6X038ODO8B;ETHYLENE, 1,2-DIBROMO-, (E)-;Ethene, dibromo-;C2H2Br2;2-01-00-00164 (Beilstein Handbook Reference);4-01-00-00721 (Beilstein Handbook Reference);Ethylene, dibromo-;25429-23-6;C2-H2-Br2;s-Dibromoethylene;(1E)-1,2-dibromoethene;(E)-DIBROMOETHYLENE;SCHEMBL33362;6X038ODO8B;DTXSID3060241;DTXSID001019898;MFCD00000184;ACETYLENE DIBROMIDE TRANS-FORM;AKOS015913227;Ethene, 1,2-dibromo-, (E)- (9CI);LS-68504;LS-68505;CS-0197272;Q27263788

Chemical Property of 1,2-Dibromoethylene

Chemical Property:

• Melting Point: -6.5°C
• Refractive Index: 1.5505
• Boiling Point: 108°Cat760mmHg
• Flash Point: °C
• PSA: 0.00000
• Density: 2.279g/cm³
• LogP: 2.24740
• XLogP3: 1.9
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 0
• Exact Mass: 185.85028
• Heavy Atom Count: 4
• Complexity: 19.2

Purity/Quality:

99% ^*data from raw suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

• Chemical Classes: Other Classes -> Halogenated Aliphatics, Unsaturated
• Canonical SMILES: C(=CBr)Br
• Isomeric SMILES: C(=C/Br)\Br

Technology Process of 1,2-Dibromoethylene

There total 7 articles about 1,2-Dibromoethylene which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 73.0%

acetylene (74-86-2,25067-58-7) → (E)-1,2-dibromoethene (590-12-5)

Guidance literature:

With bromine; In dichloromethane; N,N-dimethyl-formamide; at -5 - 20 ℃; for 4h;

Reference yield:

acetylene (74-86-2,25067-58-7) → vinylidene dibromide (593-92-0) + (E)-1,2-dibromoethene (590-12-5)

Guidance literature:

With ammonium bromide; water; at 100 ℃;

Reference yield:

1,1,2,2-tetrabromoethane (79-27-6) → (Z)-1,2-dibromo-ethene (590-11-4) + (E)-1,2-dibromoethene (590-12-5)

Guidance literature:

With zinc; In ethanol;

upstream raw materials:

cis-1-bromo-2-iodo-ethene

acetylene

1,1,2,2-tetrabromoethane

dibromoketene

Downstream raw materials:

(E)-(4-bromo-but-3-en-1-yn-1-yl)trimethylsilane

(E)-1,6-hex-3-ene-1,5-diyne

trans-1,6-Bis(phenyl)hexa-1,5-diyn-3-ene

trans-1,4-dicyano-2-butene

Refernces

• 1、 -. "Preparation method 1,4-cyano -2-butene". Paragraph 0017-0019; 0022-0024; 0026-0028; 0030-0032. . Retrieved 2020/04/17.
• 2、 -. "Parasiticidal pyrazoles". . . Retrieved 2008/06/13.