Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Water | HCID 962 | — |
| Reactant | Methyl iodide | HCID 6328 | — |
| Reactant | Lithium diisopropylamide | HCID 2724682 | — |
| Reactant | Ethyl (5-bromopyrimidin-2-yl)acetate | HCID 45789883 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Solvent | Tetrahydrofuran heptane ethylbenzol | HCID 22742125 | — |
| Product | HCID 89923708 | HCID 89923708 | 79% |
Reaction Steps
Ethyl 2-(5-bromopyrimidin-2-yl)acetate (500 mg, 2.04 mmol) was dissolved in THF (8 mL) and the mixture was cooled to −78° C. under nitrogen. LDA in THF/heptane/ethylbenzene (2M, 1.25 mL) was added dropwise, then the mixture was stirred for 15 minutes. Iodomethane (0.22 mL, 3.53 mmol) was added, then the reaction mixture was warmed to room temperature and stirred for a further 2 h. Water (10 mL) was added and the mixture was extracted with ethyl acetate (20 mL). The aqueous layer was acidified to pH ˜5 with 1M HCl, then extracted with additional ethyl acetate (2×20 mL). The combined organic layers were dried over Na2SO4 and concentrated under vacuum. The residue was purified by silica gel chromatography, eluting with a gradient of 0-50% ethyl acetate in heptane, to afford the title compound (417 mg, 79%) as a yellow oil. δH (500 MHz, CDCl3) 8.75 (s, 2H), 4.18 (m, 2H), 4.08 (q, J 7.2 Hz, 1H), 1.60 (d, J 7.3 Hz, 3H), 1.22 (t, J 7.1 Hz, 3H).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US09309243B2 |
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| Source dataset | uspto-grants-2016_04 |
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| ORD ID | ord-2b03993a25ca47f89ccc122d705bb298 |
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| Source note | uspto-grants-2016_04 |
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