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:

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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