Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | Potassium Carbonate | HCID 11430 | — |
| Reactant | 2-Bromo-1-chloro-4-(trifluoromethyl)benzene | HCID 67988 | — |
| Reactant | HCID 18424424 | HCID 18424424 | — |
| Catalyst | Tetrabutylammonium Bromide | HCID 74236 | — |
| Catalyst | palladium(II) acetate | HCID 167845 | — |
| Solvent | Dimethylacetamide | HCID 31374 | — |
| Product | HCID 18424393 | HCID 18424393 | 88% |
Reaction Steps
A mixture of 3-bromo-4-chlorobenzotrifluoride (1.50 g), 1-fluoro-2-fluoromethyl-3-buten-2-ol (0.80 g), potassium carbonate (2.10 g), tetrabutylammonium bromide (325 mg), palladium acetate (56 mg) and N,N-dimethylacetamide (10 ml) was stirred under a nitrogen atmosphere at 80° C. for 14 hours. To the reaction mixture, 1 N HCl was added followed by extraction with a hexane/ethyl acetate mixed (1/1) solvent; the resulting organic layers were combined and washed with a saturated aqueous solution of sodium thiosulfate and a saturated aqueous solution of sodium chloride; the mixture was dried with anhydrous sodium sulfate and concentrated under reduced pressure; the resulting residue was subjected to silica gel column chromatography (eluent; hexane/ethyl acetate=10/1) to give 4-(2-chloro-5-trifluoromethylphenyl)-1-fluoro-2-fluoromethyl-3-trans-buten-2-ol (1.53 g) having a melting point of 61-62° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US06455708B1 |
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| Source dataset | uspto-grants-2002_09 |
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| ORD ID | ord-745a1a71b5384500b36d56cf9bbe7072 |
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| Source note | uspto-grants-2002_09 |
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