1-bromo-2,5-dimethyl-4-nitrobenzene

Product Name: 1-bromo-2,5-dimethyl-4-nitrobenzene
CAS No.: 15540-81-5
Chemical Name: 1-bromo-2,5-dimethyl-4-nitrobenzene
Synonyms: 4-Bromo-2,5-dimethylnitrobenzene;1-bromo-2,5-dimethyl-4-nitrobenzene;Benzene, 1-bromo-2,5-dimethyl-4-nitro-;1-Bromo-2,5-dimethyl-4-nitrobenzene 98%;1-Bromo-2,5-dimethyl-4-nitro-benzene（2-Bromo-5-nitro-p-xylene）
CBNumber: CB71882877
Molecular Formula: C8H8BrNO2
Formula Weight: 230.06
MOL File: 15540-81-5.mol

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1-bromo-2,5-dimethyl-4-nitrobenzene Property

Melting point:: 70 °C
Boiling point:: 288.8±35.0 °C(Predicted)
Density: 1.533±0.06 g/cm3(Predicted)
storage temp.: Sealed in dry,Room Temperature
Appearance: light green to green Solid

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Safety

HS Code: 2904990090

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

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

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

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N-Bromosuccinimide Price

TRC

Product number: B691663
Product name: 1-Bromo-2,5-dimethyl-4-nitro-benzene
Packaging: 100mg
Price: $65
Updated: 2021/12/16

SynQuest Laboratories

Product number: 4754-9-47
Product name: 1-Bromo-2,5-dimethyl-4-nitrobenzene
Packaging: 250mg
Price: $100
Updated: 2021/12/16

AK Scientific

Product number: 9765AH
Product name: 1-Bromo-2,5-dimethyl-4-nitrobenzene
Packaging: 250mg
Price: $136
Updated: 2021/12/16

SynQuest Laboratories

Product number: 4754-9-47
Product name: 1-Bromo-2,5-dimethyl-4-nitrobenzene
Packaging: 1g
Price: $245
Updated: 2021/12/16

American Custom Chemicals Corporation

Product number: HCH0069328
Product name: 1-BROMO-2,5-DIMETHYL-4-NITRO-BENZENE
Purity: 97.00%
Packaging: 5MG
Price: $502.99
Updated: 2021/12/16

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1-bromo-2,5-dimethyl-4-nitrobenzene Chemical Properties,Usage,Production

Synthesis

3460-29-5

15540-81-5

General Steps: Part A-Preparation of copper (I) bromide solution: dissolve copper (I) bromide (72.5 g, 505 mmol) in 37% hydrochloric acid (150 mL) and heat to 80°C until a clarified solution is formed. Part B-Diazotization and Sandmeyer bromination: to a concentrated hydrochloric acid solution (150 mL) of 2,5-dimethyl-4-nitroaniline (21 g, 126 mmol), a mixture of saturated sodium nitrite solution (1.7 g, 253 mmol) and water (20 mL) was added slowly and dropwise at 0°C with continuous stirring for 30 min. Subsequently, copper (I) bromide solution prepared in part A was added slowly and dropwise at the same temperature. After addition, the reaction mixture was warmed up to 80 °C and maintained for 1 hour. After completion of the reaction, the reaction mixture was diluted with water and extracted with ethyl acetate. The organic layers were combined, dried with anhydrous sodium sulfate and concentrated under reduced pressure. Finally, the target product 1-bromo-2,5-dimethyl-4-nitrobenzene (22 g, 76% yield) was purified by column chromatography (eluent: hexane/ethyl acetate, 8:2).

References

[1] Patent: WO2018/211442, 2018, A1. Location in patent: Page/Page column 71-72
[2] Recueil des Travaux Chimiques des Pays-Bas, 1956, vol. 75, p. 1137,1138, 1149

1-bromo-2,5-dimethyl-4-nitrobenzene Preparation Products And Raw materials

Raw materials

Preparation Products

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1-bromo-2,5-dimethyl-4-nitrobenzene Suppliers

China 41 India 2 The Netherlands 1 United Kingdom 1 United States 4 Global 49

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15540-81-5