Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | Ethyl 2-chloropropionate | HCID 10807 | — |
| Reactant | 4-bromo-2-fluoro-1-(methylsulfonylmethyl)benzene | HCID 2761448 | — |
| Catalyst | Trifluoroacetic acid | HCID 6422 | — |
| Catalyst | Manganese | HCID 23930 | — |
| Solvent | Dimethylformamide | HCID 6228 | — |
| Product | HCID 70815867 | HCID 70815867 | 45% |
Reaction Steps
To a stirred solution of 4-bromo-2-fluoro-1-(methylsulfonylmethyl)benzene (2 g, 7.487 mmol) in dimethylformamide (11 mL) were added ethyl 2-chloropropionate (1.24 mL, 9.733 mmol), manganese (822 mg, 14.974 mmol) and (2,2′-bipyridine)nickel(II)-dibromide (196 mg, 0.524 mmol). Trifluoroacetic acid (4 drops) was added. The reaction mixture was stirred overnight at 60° C. After cooling down to room temperature, the mixture was hydrolyzed by 1N HCl (30 mL) and extracted with ethyl acetate (3×50 mL). The organic layer was dried over magnesium sulfate and filtered. The solvent was removed in vacuo. The crude product was purified by CC (eluent: ethyl acetate/cyclohexane (1:1)) to give ethyl 2-(3-fluoro-4-(methylsulfonylmethyl)phenyl)propanoate (966 mg, 45%).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US08946204B2 |
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| Source dataset | uspto-grants-2015_02 |
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| ORD ID | ord-f86bb2dd99074558b701310666cac967 |
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| Source note | uspto-grants-2015_02 |
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