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CAS No. : | 85118-01-0 | MDL No. : | MFCD00009889 |
Formula : | C7H5BrF2 | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | JJIFTOPVKWDHJI-UHFFFAOYSA-N |
M.W : | 207.02 | Pubchem ID : | 581436 |
Synonyms : |
|
Signal Word: | Danger | Class: | 8 |
Precautionary Statements: | P261-P280-P305+P351+P338-P310 | UN#: | 3265 |
Hazard Statements: | H227-H314-H335 | 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 |
---|---|---|
93% | With potassium hydroxide; In tetrahydrofuran; at 70℃; for 12h; | A mixture of <strong>[5932-27-4]ethyl 1H-pyrazole-3-carboxylate</strong> (1.4 g, 9.66 mmol), 4-(bromomethyl)- 1,2-difluorobenzene (1.0 g, 4.83 mmol) and potassium hydroxide (0.27 g, 4.83 mmol) in tetrahydrofuran (100 mL) was stirred at 70 °C for 12H. After cooling to RT, the mixture was filtered and the filtrate was concentrated to dryness in vacuo. The resulting residue was purified by column chromatography (silica gel, 100-200 mesh, 0 to 100percent) ethyl acetate in petroleum ether) to afford ethyl l -(3,4-difluorobenzyl)-1H-imidazole-4-carboxylate (1.2 g, 93percent yield) as white solid: LCMS (0 to 60percent acetonitrile in water + 0.03percent trifluoroacetic acid over 2 mins) retention timel .25 min, ESI+ found [M+H] = 266.9. |
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