Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Acetone | HCID 180 | — |
| Reactant | 2-Bromo-5-fluoropyridine | HCID 2783171 | — |
| Solvent | Diethyl Ether | HCID 3283 | — |
| Product | HCID 58243400 | HCID 58243400 | 45% |
Reaction Steps
To a stirred solution of 2-bromo-5-fluoropyridine (1.0 g, 5.7 mmol) in diethyl ether (20 ml) under a nitrogen atmosphere at −78° C. was added sesBuLi (4.87 ml of a 1.4 M solution in heptanes, 6.8 mmol). The resulting dark orange solution was stirred for 30 minutes at −78° C. and acetone (0.84 ml, 11.4 mmol) was then added dropwise. After a further 1 hour the reaction temperature was raised to room temperature giving a clear yellow solution. This was quenched with water (2 ml), diluted with EtOAc (30 ml) and washed with water (2×20 ml), dried (MgSO4), filtered and concentrated. The residue was purified via silica FCC (using a gradient of eluents; 9:1 to 4:6 hexane/diethyl ether) to give the title product as colourless oil (395 mg, 45%).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US08691804B2 |
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| Source dataset | uspto-grants-2014_04 |
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| ORD ID | ord-0b2f38581c234a798205bce590cff063 |
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| Source note | uspto-grants-2014_04 |
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