| Identification | More | [Name]
2-Bromo-3-chloro-5-(trifluoromethyl)pyridine | [CAS]
75806-84-7 | [Synonyms]
2-BROMO-3-CHLORO-5-(TRIFLUOROMETHYL)PYRIDINE
BUTTPARK 153\33-66
2-Bromo-3-chloro-5-(trifluoromethyl)pyridine 97%
2-Bromo-3-chloro-5-(trifluoromethyl)pyridine97%
2-BROMO-3-CHLORO-5-(TRIFLUOROMETHYL)PYRI | [Molecular Formula]
C6H2BrClF3N | [MDL Number]
MFCD00153072 | [Molecular Weight]
260.44 | [MOL File]
75806-84-7.mol |
| Chemical Properties | Back Directory | [Boiling point ]
88 °C | [density ]
1.83 | [refractive index ]
1.4990 to 1.5030 | [Fp ]
91° | [storage temp. ]
under inert gas (nitrogen or Argon) at 2–8 °C | [form ]
clear liquid | [pka]
-3.92±0.20(Predicted) | [color ]
Light yellow to Yellow to Orange | [InChI]
InChI=1S/C6H2BrClF3N/c7-5-4(8)1-3(2-12-5)6(9,10)11/h1-2H | [InChIKey]
SMTKGMYGLYWNDL-UHFFFAOYSA-N | [SMILES]
C1(Br)=NC=C(C(F)(F)F)C=C1Cl | [CAS DataBase Reference]
75806-84-7(CAS DataBase Reference) |
| Safety Data | Back Directory | [Hazard Codes ]
Xi | [Risk Statements ]
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:Wear suitable protective clothing .
S37/39:Wear suitable gloves and eye/face protection . | [Hazard Note ]
Irritant | [HazardClass ]
IRRITANT | [HS Code ]
29333990 |
| Hazard Information | Back Directory | [Synthesis]
General procedure for the synthesis of 2-bromo-3-chloro-5-(trifluoromethyl)pyridine from 3-chloro-2-hydroxy-5-(trifluoromethyl)pyridine: 3-chloro-5-(trifluoromethyl)-2-hydroxypyridine (17.1 g, 0.087 mol) was added to 150 mL of tribromophosphorus oxide and heated to 150 °C for 6 hours. After the reaction was completed, it was cooled to room temperature. The reaction mixture was slowly and carefully added to ice water at -5 to 0 °C and stirred vigorously at 200 rpm for 1 hour. The resulting mixture was extracted three times with dichloromethane. The organic phases were combined, dried with anhydrous sodium sulfate, filtered and concentrated to give the crude product. The crude product was purified by silica gel column chromatography using dichloromethane-methanol (100:1 to 20:1, v/v) as eluent to give 13.1 g of 2-bromo-3-chloro-5-(trifluoromethyl)pyridine (0.05 mol) in 58% yield. | [References]
[1] Patent: CN102875453, 2016, B. Location in patent: Paragraph 0026 |
|
|