ChemicalBook > CAS DataBase List > 1,4-Dibromo-2,5-dimethoxybenzene

1,4-Dibromo-2,5-dimethoxybenzene

Product Name
1,4-Dibromo-2,5-dimethoxybenzene
CAS No.
2674-34-2
Chemical Name
1,4-Dibromo-2,5-dimethoxybenzene
Synonyms
2,5-Dimethoxy-1,4-dibromobenzene;2,5-Dibromo-1,4-dimethoxybenzene;1,4-Dimethoxy-2,5-dibromobenzene;1,4-DIBROMO-2,5-DIMETHOXYBENZENE;1,4-Diboromo-2,5-dimethoxybenzene;Benzene,1,4-dibromo-2,5-dimethoxy-;1,4-Dibromo-2,5-dimethoxybenzene>1,4-Dibromo-2,5-dimethoxybenzene,99%;1,4-Dibromo-2,5-dimethoxybenzene 97%;1,4-Dibromo-2,5-dimethoxybenzene, 98+%
CBNumber
CB4778088
Molecular Formula
C8H8Br2O2
Formula Weight
295.96
MOL File
2674-34-2.mol
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1,4-Dibromo-2,5-dimethoxybenzene Property

Melting point:
144-149 °C (lit.)
Boiling point:
290.3±35.0 °C(Predicted)
Density 
2,24 g/cm3
refractive index 
1.4947 (estimate)
storage temp. 
Sealed in dry,Room Temperature
form 
powder to crystal
color 
White to Almost white
Water Solubility 
Insoluble in water.
BRN 
1953103
InChI
InChI=1S/C8H8Br2O2/c1-11-7-3-6(10)8(12-2)4-5(7)9/h3-4H,1-2H3
InChIKey
CHCLRVOURKGRSW-UHFFFAOYSA-N
SMILES
C1(Br)=CC(OC)=C(Br)C=C1OC
CAS DataBase Reference
2674-34-2(CAS DataBase Reference)
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Safety

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
37/39-26-36
WGK Germany 
3
Hazard Note 
Irritant
HS Code 
2909303890
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
461105
Product name
1,4-Dibromo-2,5-dimethoxybenzene
Purity
97%
Packaging
5g
Price
$55
Updated
2023/06/20
Sigma-Aldrich
Product number
461105
Product name
1,4-Dibromo-2,5-dimethoxybenzene
Purity
97%
Packaging
25g
Price
$155
Updated
2022/05/15
TCI Chemical
Product number
D3966
Product name
1,4-Dibromo-2,5-dimethoxybenzene
Purity
>98.0%(GC)
Packaging
5g
Price
$47
Updated
2025/07/31
TCI Chemical
Product number
D3966
Product name
1,4-Dibromo-2,5-dimethoxybenzene
Purity
>98.0%(GC)
Packaging
25g
Price
$185
Updated
2025/07/31
TRC
Product number
D425573
Product name
1,4-Dibromo-2,5-dimethoxybenzene
Packaging
1g
Price
$75
Updated
2021/12/16
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1,4-Dibromo-2,5-dimethoxybenzene Chemical Properties,Usage,Production

Chemical Properties

white crystalline powder

Uses

1,4-Dibromo-2,5-dimethoxybenzene was used in the preparation of poly[(9,9-bis(6-(dibromohexyl)-2,7-fluorene))-alt-1,4-(2,5-dimethoxybenzene)], a water-soluble polyfluorene derivative.

Synthesis Reference(s)

The Journal of Organic Chemistry, 63, p. 3764, 1998 DOI: 10.1021/jo9721812

General Description

Crystal structure of 1,4-dibromo-2,5-dimethoxybenzene has been reported to be monoclinic and its asymmetric unit is composed of one-half of the molecule. Lithium diisopropylamide (LDA) mediated metallation of 1,4-dibromo-2,5-dimethoxybenzene has been proposed.

Synthesis

150-78-7

2674-34-2

Example 2: Preparation of 2,5-dibromo-1,4-dimethoxybenzene (2); In a 1 liter round-bottomed flask, a solution of chloroform (50 mL) of bromine (35.2 g, 220 mmol) was added slowly and dropwise to a solution of chloroform (400 mL) of 1,4-dimethoxybenzene (13.8 g, 100 mmol). The reaction mixture was stirred at room temperature for 3 hours before 100 mL of saturated Na2CO3 solution was added to quench the reaction. The organic layer was separated, washed sequentially with water and saturated brine, and dried over anhydrous sodium sulfate. The solvent was removed by concentration under reduced pressure and the resulting residue was recrystallized from ethanol to give pure 2,5-dibromo-1,4-dimethoxybenzene (25.8 g, 85% yield). The product was characterized by 1H NMR (CDCl3): δ 7.128 (s, 2H), 3.873 (s, 6H).

References

[1] Tetrahedron, 1999, vol. 55, # 36, p. 11127 - 11142
[2] Tetrahedron Letters, 1998, vol. 39, # 35, p. 6349 - 6350
[3] Organic Process Research and Development, 2016, vol. 20, # 2, p. 284 - 296
[4] Journal of the American Chemical Society, 2003, vol. 125, # 37, p. 11241 - 11248
[5] Journal of Materials Chemistry A, 2017, vol. 5, # 44, p. 22933 - 22938

1,4-Dibromo-2,5-dimethoxybenzene Preparation Products And Raw materials

Raw materials

Preparation Products

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1,4-Dibromo-2,5-dimethoxybenzene Suppliers

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View Lastest Price from 1,4-Dibromo-2,5-dimethoxybenzene manufacturers

Career Henan Chemical Co
Product
1,4-Dibromo-2,5-dimethoxybenzene 2674-34-2
Price
US $1.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
100kg
Release date
2019-07-12

2674-34-2, 1,4-Dibromo-2,5-dimethoxybenzeneRelated Search:

3,4-Dimethoxyphenol Phthalic anhydride Dimethyldimethoxysilane Dibutyl phthalate Anisole (Trifluoromethoxy)benzene 3,5-Dimethoxyphenol 1,3-Dimethoxybenzene 2-Phenoxyethanol O-Phthalimide Phthalates 1,3-Dibromo-4,6-Dimethoxybenzene,1,5-Dibromo-2,4-dimethoxybenzene 1,2-DIBROMO-4,5-DIMETHOXYBENZENE TETRADECABROMO-1,4-DIPHENOXYBENZENE 1,4-Dibromo-2,5-dimethoxybenzene 2,5-BIS[2-(N,N-DIETHYLAMINO)-ETHOXY]-1,4-DIBROMOBENZENE 1,4-DIBROMO-2,5-BIS(DECYLOXY)BENZENE 1,4-DIBROMO-2,5-BIS(3-SULFONATOPROPOXY)BENZENE DISODIUM SALT

  • 1,4-DIBROMO-2,5-DIMETHOXYBENZENE
  • 1,4-Dimethoxy-2,5-dibromobenzene
  • 2,5-Dibromo-1,4-dimethoxybenzene
  • 2,5-Dimethoxy-1,4-dibromobenzene
  • 1,4-Dibromo-2,5-dimethoxybenzene,99%
  • 1,4-Dibromo-2,5-dimethoxybenzene, 98+%
  • 1,4-Dibromo-2,5-dimethoxybenzene 97%
  • Benzene,1,4-dibromo-2,5-dimethoxy-
  • 1,4-Diboromo-2,5-dimethoxybenzene
  • 1,4-Dibromo-2,5-dimethoxybenzene&gt
  • 1,4-Dimethoxy-2,5-dibromobenzene,1,4-DibroMo-2,5-diMethoxybenzene,1,4-dibromro-2,5-dimethoxybenzene,1,4-dibromo-2,5-dimethoxy-benzene,2,5-
  • 2674-34-2
  • C8H8Br2O2
  • Br2C6H2OCH32
  • Building Blocks
  • Ethers
  • Organic Building Blocks
  • Oxygen Compounds
  • Ethers
  • Organic Building Blocks
  • Oxygen Compounds