Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Acetic Acid | HCID 176 | — |
| Reactant | 3-Oxotetrahydrofuran | HCID 529392 | — |
| Reactant | Sodium triacetoxyborohydride | HCID 5049666 | — |
| Reactant | HCID 178511686 | HCID 178511686 | — |
| Solvent | Dichloromethane | HCID 6344 | — |
| Product | HCID 178523790 | HCID 178523790 | 97.5% |
Reaction Steps
To a stirred solution of benzyl trans-4-aminocyclohexylcarbamate (396 mg, 1.595 mmol) in CH2Cl2 (9 ml) was added dihydrofuran-3(2H)-one (151 mg, 1.754 mmol) followed by acetic acid (150 μL, 2.62 mmol) and sodium triacetoxyborohydride (439 mg, 2.073 mmol) under Argon. Stirred at 25° C. for 16 h, then concentrated in vacuo. The resulting residue was partitioned between EtOAc and 1M NaOH. The organics were combined, then washed with 1M NaOH (×2), water (×2), saturated brine (×2), then dried (Na2SO4), filtered and evaporated under reduced pressure to give racemic benzyl trans-4-(tetrahydrofuran-3-yl-amino)cyclohexylcarbamate (495 mg). The resulting residue was used in next step without further purification.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US08415381B2 |
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| Source dataset | uspto-grants-2013_04 |
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| ORD ID | ord-72a263faef264266ad5eac72508da5b5 |
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| Source note | uspto-grants-2013_04 |
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