| Identification | More | [Name]
4-Bromo-5-fluoro-2-nitrotoluene | [CAS]
224185-19-7 | [Synonyms]
4-BROMO-3-FLUORO-6-NITROTOLUENE
4-BROMO-5-FLUORO-2-NITROTOLUENE
4-Bromo-5-fluoro-2-nitortoluene
2-Nitro-4-Bromo-5-Fluorotoluene
1-Bromo-2-fluoro-4-methyl-5-nitro-benzene | [EINECS(EC#)]
625-785-2 | [Molecular Formula]
C7H5BrFNO2 | [MDL Number]
MFCD04039299 | [Molecular Weight]
234.02 | [MOL File]
224185-19-7.mol |
| Safety Data | Back Directory | [Hazard Codes ]
Xn,Xi | [Risk Statements ]
R22:Harmful if swallowed.
R36:Irritating to the eyes.
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37:Wear suitable protective clothing and gloves .
S36:Wear suitable protective clothing . | [WGK Germany ]
3
| [Hazard Note ]
Irritant | [HS Code ]
29049090 |
| Hazard Information | Back Directory | [Chemical Properties]
pale yellow powder | [Synthesis]
2-Fluoro-4-methyl-5-nitro-aniline (1.85 g, 10.90 mmol) was suspended in concentrated hydrobromic acid (22 ml_) and cooled to 0 ℃. Solution of sodium nitrite (0.83 g, 12.00 mmol) in water (3.6 ml_) was added dropwise while maintaining the temperature at 0-5 °C. After stirring for 15 min, the mixture was filtered through a cotton pad and slowly poured into a solution of cuprous oxide (2.60 g, 17.5 mmol) and concentrated hydrobromic acid (20 ml) at 0 °C. After stirring overnight, the reaction mixture was diluted with EtOAc, washed with 10 % aq NaOH and 5percent aq Na2S2Os successively, dried over MgSO4, filtered and concentrated. The residue was purified by column chromatography (ethyl acetate: hexane; 2:98) to afford 1-Bromo-2-fluoro-4- methyl-5-nitro-benzene as a colorless oil (2.30 g, 91 %).
|
|
|