ChemicalBook--->CAS DataBase List--->59255-94-6

59255-94-6

59255-94-6 Structure

59255-94-6 Structure
IdentificationMore
[Name]

2-Bromo-3-fluoronitrobenzene
[CAS]

59255-94-6
[Synonyms]

2-BROMO-3-FLUORONITROBENZENE
2-Bromo-1-fluoro-3-nitrobenzene
[EINECS(EC#)]

1533716-785-6
[Molecular Formula]

C6H3BrFNO2
[MDL Number]

MFCD07782080
[Molecular Weight]

220
[MOL File]

59255-94-6.mol
Chemical PropertiesBack Directory
[Melting point ]

42.0-44.0 °C(Solv: ethyl acetate (141-78-6); hexane (110-54-3))
[Boiling point ]

222.3±20.0 °C(Predicted)
[density ]

1.808±0.06 g/cm3(Predicted)
[storage temp. ]

Sealed in dry,Room Temperature
[form ]

solid
[color ]

yellow
[CAS DataBase Reference]

59255-94-6(CAS DataBase Reference)
Safety DataBack Directory
[Symbol(GHS) ]


GHS07
[Signal word ]

Warning
[Hazard statements ]

H315-H319-H335
[Precautionary statements ]

P261-P271-P280
[Hazard Codes ]

T
[HazardClass ]

IRRITANT
[HS Code ]

2904990090
Hazard InformationBack Directory
[Synthesis]

Preparation method of 2-bromo-3-fluoronitrobenzene: Add 21.6g (0.1mol) 2-bromo-3-nitroaniline, 12.5ml (0.15mol) concentrated hydrochloric acid, and 12.5ml water into a reaction bottle, and reduce the temperature to 15°C; dissolve 8.3g (0.12mol) sodium nitrite in 14.5ml water and slowly add dropwise to the above system, then add 11.4g (0.13mol) fluoroboric acid, keep warm at 15°C and stir for 2 hours, track the reaction by HPLC until the reaction of 2-bromo-3-nitroaniline is complete; filter, rinse the filter cake with methanol, and dry to obtain 25.8g of intermediate IV. Add 30 ml of toluene to the reaction flask, heat to 100 ° C, slowly add 10 g (31.7 mmol) of intermediate IV, keep warm and stir for 1 hour, track the reaction by HPLC until the intermediate IV reacts completely: concentrate, recrystallize from ethyl acetate and n-hexane to obtain 5.7 g of 2-Bromo-3-fluoronitrobenzene, with a molar yield of 83%.2-Bromo-3-fluoronitrobenzene
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