Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Acetic Acid | HCID 176 | — |
| Reactant | Sodium Bicarbonate | HCID 516892 | — |
| Reactant | Sodium borohydride | HCID 4311764 | — |
| Reactant | HCID 86666945 | HCID 86666945 | — |
| Solvent | Methanol | HCID 887 | — |
| Product | HCID 86677812 | HCID 86677812 | 98.1% |
Reaction Steps
A solution of tert-butyl 3-(3-acetyl-5,6-dichloro-2-methoxyphenyl)azetidine-1-carboxylate (9.6 g, 26 mmol) in methanol (240 mL) at 0° C. was treated with sodium tetrahydroborate (1.9 g, 51 mmol) portionwise over 5 min and stirred at 0° C. for 30 min. The reaction mixture was quenched with acetic acid (7.3 mL, 130 mmol) at 0° C. and treated with saturated sodium bicarbonate solution (˜50 mL). The reaction mixture was concentrated to remove most of the methanol (to ˜60 mL), poured into saturated sodium bicarbonate solution (150 ml), and extracted with ethyl acetate (2×200 mL). The combined organic extracts were washed with water and brine, dried over sodium sulfate, filtered, and concentrated to give the desired product (9.6 g, quantitative) that was used without further purification. LCMS for C13H16Cl2NO4 ([M-(t-Bu)+]+H)+: m/z=320.0; Found: 320.0.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US09199982B2 |
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| Source dataset | uspto-grants-2015_12 |
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| ORD ID | ord-5370826a5b164c948944a965d9029032 |
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| Source note | uspto-grants-2015_12 |
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