Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | tert-Butanol | HCID 6386 | — |
| Reactant | Methyl 3-oxovalerate | HCID 121699 | — |
| Reactant | 1-(Chloromethyl)-4-methanesulfonylbenzene | HCID 123530 | — |
| Reactant | Potassium tert-butoxide | HCID 23665647 | — |
| Solvent | Water | HCID 962 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | HCID 68783429 | HCID 68783429 | — |
Reaction Steps
A suspension of potassium tert-butoxide (2.7 g) in anhydrous tetrahydrofuran (35 mL) at 0° C. was treated with a mixture of tert-butanol (0.1 mL) and 3-oxopentanoic acid methyl ester (3.2 g). After stirring at room temperature for 15 minutes a solution of 1-chloromethyl-4-methanesulfonylbenzene (5.0 g) in tetrahydrofuran (15 mL) was added and the resulting mixture heated at 70° C. for 16 hours. The mixture was cooled to room temperature, diluted with water and the tetrahydrofuran removed under reduced pressure. The residue was partitioned between ethyl acetate and dilute aqueous ammonium chloride solution. The aqueous phase was extracted with ethyl acetate and the combined organic phases dried over magnesium sulfate. The solvent was removed under reduced pressure and the residue purified by column chromatography on silica gel, eluting with a mixture of toluene, dichloromethane and ethyl acetate (1:1:0 to 0:1:0 to 0:4:1 by volume) to afford title compound as a waxy white solid, 3.0 g.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US07858640B2 |
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| Source dataset | uspto-grants-2010_12 |
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| ORD ID | ord-957066c227064e3aad88ef069f32f38b |
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| Source note | uspto-grants-2010_12 |
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