Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Methanol | HCID 887 | — |
| Reactant | Ammonium Chloride | HCID 25517 | — |
| Reactant | 106391-88-2 | HCID 11830471 | — |
| Reactant | HCID 178418573 | HCID 178418573 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | HCID 86671311 | HCID 86671311 | 92% |
Reaction Steps
(R)-tert-butyl 3-methyl-1-oxobutan-2-ylcarbamate (2.5 g, 12.42 mmol) was dissolved in THF (50 mL) and cooled to 0° C. Methyl magnesium bromide (17.0 mL, 51.0 mmol, 3.0 M in diethyl ether) was carefully added via syringe. The reaction was allowed to warm to ambient temperature and left stirring overnight. The cloudy mixture was chilled to 0° C., quenched with methanol (3.0 mL, 74.0 mmol), followed by the addition of 200 mL saturated NH4Cl solution, and extracted twice with 200 mL MTBE. The organic phase was washed with 200 mL brine, dried over Na2SO4, filtered, and concentrated to provide the title compound (2.484 g, 11.43 mmol, 92% yield) as a yellow oil. MS (DCI+) m/z 218.1 (M+H).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US09012651B2 |
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| Source dataset | uspto-grants-2015_04 |
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| ORD ID | ord-8e4c888bea98421b9f7fcb7396eafa16 |
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| Source note | uspto-grants-2015_04 |
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