| Identification | More | [Name]
2,4-Difluorophenol | [CAS]
367-27-1 | [Synonyms]
2,4-DIFLUOROPHENOL
Phenol, 2,4-difluoro-
2,4-Difluorophenol, 98+%
2,4-Difluorophenol, 99+%
2,4-Difluorophenol 98% | [EINECS(EC#)]
206-688-0 | [Molecular Formula]
C6H4F2O | [MDL Number]
MFCD00009715 | [Molecular Weight]
130.09 | [MOL File]
367-27-1.mol |
| Chemical Properties | Back Directory | [Appearance]
clear yellow-green liquid after melting | [Melting point ]
22.4 °C (lit.) | [Boiling point ]
52-53 °C/19 mmHg (lit.) | [density ]
1.362 g/mL at 25 °C(lit.)
| [refractive index ]
n20/D 1.486(lit.)
| [Fp ]
134 °F
| [storage temp. ]
Flammables area | [form ]
powder to lump to clear liquid | [pka]
8.72±0.18(Predicted) | [color ]
White or Colorless to Yellow | [Specific Gravity]
1.362 | [Water Solubility ]
slightly soluble | [BRN ]
1934803 | [InChIKey]
NVWVWEWVLBKPSM-UHFFFAOYSA-N | [CAS DataBase Reference]
367-27-1(CAS DataBase Reference) | [NIST Chemistry Reference]
2,4-Difluorophenol(367-27-1) |
| Safety Data | Back Directory | [Hazard Codes ]
Xn,Xi,C,F | [Risk Statements ]
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed .
R37/38:Irritating to respiratory system and skin .
R41:Risk of serious damage to eyes.
R34:Causes burns.
R11:Highly Flammable.
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 .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S16:Keep away from sources of ignition-No smoking . | [RIDADR ]
1992 | [WGK Germany ]
3
| [Hazard Note ]
Harmful | [HazardClass ]
3 | [PackingGroup ]
III | [HS Code ]
29081900 |
| Raw materials And Preparation Products | Back Directory | [Raw materials]
2,4-Dichloronitrobenzene-->2,5-Difluorophenol-->Phenol-->2,4-Difluorophenylboronic acid-->Water-->Hydrogen peroxide-->1,4-Difluorobenzene | [Preparation Products]
3-(2,4-difluorophenoxy)propanoic acid-->3-AMINO-2-(2,4-DIFLUOROPHENOXY)PYRIDINE-->2,4-DIFLUORO-6-NITROPHENOL-->2,4-Difluoro-5-nitrophenol-->2-Bromo-4,6-difluorophenol-->ABBV-075-->4-Fluorophenol-->AKOS B013914-->3-Ethoxy-2,6-difluorobenzaldehyde-->2-(2,4-difluorophenoxy)aniline-->4'-(2,4-DIFLUOROPHENOXY)ACETOPHENONE-->7,9-difluoro-2,3,4,5-tetrahydro-1-benzoxepin-5-one |
| Hazard Information | Back Directory | [Chemical Properties]
clear yellow-green liquid after melting | [Uses]
2,4-Difluorophenol, is an organic building block used for the synthesis of various pharmaceutical compounds, such as antivirulence agents. It is also used in the synthesis of new α-Phenoxyacetamide derivatives, acting as type III secretion system of Pseudomonas aeruginosa PAO1, a gram-negative bacteria. | [Synthesis]
General procedure for the synthesis of 2,4-difluorophenol from 2,4-difluorophenylboronic acid: arylboronic acid (1 mmol), 30% aqueous H2O2 solution (0.2 mL), ZnO nanocatalyst (5 mol%, sample ZnO-1), and 2 mL of water were stirred and mixed in a 50 mL round-bottomed flask at room temperature and under aerobic conditions. The reaction process was monitored by thin layer chromatography (TLC). Upon completion of the reaction, the reaction mixture was diluted with 20 mL of water and extracted with ether (3 x 20 mL). The organic layers were combined, washed with brine and dried over Na2SO4. The solvent was removed by rotary evaporator under reduced pressure. The crude product was purified by silica gel (100-200 mesh) column chromatography (hexane/ethyl acetate, 9:1) to afford the target product 2,4-difluorophenol. The product structure was confirmed by 1H NMR and 13C NMR. | [References]
[1] Applied Catalysis A: General, 2018, vol. 562, p. 58 - 66
[2] Tetrahedron Letters, 2015, vol. 56, # 14, p. 1780 - 1783
[3] Journal of Organic Chemistry, 2001, vol. 66, # 2, p. 633 - 634 |
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