Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | 2,6-Lutidine | HCID 7937 | — |
| Reactant | Trimethylsilyl triflate | HCID 65367 | — |
| Reactant | N-bromobutanimide | HCID 67184 | — |
| Reactant | HCID 20785250 | HCID 20785250 | — |
| Solvent | Water | HCID 962 | — |
| Solvent | Chloroform | HCID 6212 | — |
| Product | HCID 80115392 | HCID 80115392 | 92.1% |
Reaction Steps
To a chloroform (3.5 mL) solution of 1-(2,5-difluoro-4-methylphenyl)ethanone (0.23 g), under ice cooling in a nitrogen atmosphere, 2,6-lutidine (0.27 mL) and trimethylsilyl trifluoromethanesulfonate (0.32 mL) were added, and the resultant was stirred for 30 minutes. Then, N-bromosuccinimide (0.27 g) was added thereto, and the resultant was stirred for 30 minutes under ice cooling. Water was added to the reaction solution, and the resultant was stirred for 15 minutes, followed by extraction with chloroform. An organic layer was separated using a phase separator, and the solvent was distilled off under reduced pressure. The obtained residue was purified by silica gel column chromatography (OH-type silica gel; hexane/ethyl acetate-gradient elution=99/1→95/5) to obtain the title compound (0.31 g) as a white solid.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US09045466B2 |
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| Source dataset | uspto-grants-2015_06 |
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| ORD ID | ord-e902a80195f64551abb7c9d21f343797 |
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| Source note | uspto-grants-2015_06 |
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