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CAS No. : | 61721-07-1 | MDL No. : | MFCD00043875 |
Formula : | C7H4F4O | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | DHPCRFYUUWAGAH-UHFFFAOYSA-N |
M.W : | 180.10 | Pubchem ID : | 601854 |
Synonyms : |
|
Chemical Name : | 4-Fluoro-3-trifluoromethylphenol |
Signal Word: | Danger | Class: | 8 |
Precautionary Statements: | P501-P261-P273-P272-P270-P210-P234-P264-P280-P370+P378-P390-P391-P362+P364-P303+P361+P353-P333+P313-P301+P330+P331-P301+P312+P330-P304+P340+P310-P305+P351+P338+P310-P403+P235-P406-P405 | UN#: | 3265 |
Hazard Statements: | H302-H314-H317-H411-H227-H290 | Packing Group: | Ⅱ |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In acetonitrile; at 70℃; for 8h; | To the jacketed reactor containing the slurry from Step 1 was charged 4-fluoro-3- (trifluoromethyl)phenol (91.5 g, 503 mmol) over about 2 h with vigorous stirring at 70 C. Stirring was continued until 4-fluoro-3-(trifluoromethyl)phenol was less than 0.2% by GC area. About 8 h in total was needed for completion. The slurry was cooled to about 25 C and then filtered. The filter cake was washed with additional acetonitrile (1 x 60 g, optionally additional washes). The combined filtrates were heated in the reactor to about 70 to 75 C and the pressure brought to about 100 mbar to distill off the acetonitrile to obtain the title compound as an oil. The relatively high jacket temperature avoids solidification of the product, which has a mp of 55-56 C. Methyl tert- butyl ether (MTBE) (164 g) was added and the jacket temperature was brought to about 25 C. The dissolution of the product is endothermic, thus cooling the solution. Purity by GC analysis was about 97-98 %. The solution of the title compound in MTBE was carried into the next step without further purification or characterization. If desired, the product can be isolated by removing the MTBE to provide a solid that can be recrystallized from acetonitrile. |
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