Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | 2-Methyl-L-proline | HCID 6993664 | — |
| Solvent | 1-Butanol | HCID 263 | — |
| Product | HCID 58092703 | HCID 58092703 | — |
Reaction Steps
Concentrated HCl (2 ml) is added to a suspension of (S)-2-methyl-pyrrolidine-2-carboxylic acid (2 g) in butan-1-ol (50 ml) which is heated at 60° C. for 18 hours then at reflux for 4 days. The reaction mixture is evaporated, partitioned between saturated aqueous NaHCO3 and CH2Cl2, extracted 3×CH2Cl2, dried over Na2SO4 and evaporated. The isolated oil is then kugelrohr distilled at 10 mbar to give the title compound as a clear colorless oil from the fraction distilling at an oven temperature of 100-120° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US08940771B2 |
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| Source dataset | uspto-grants-2015_01 |
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| ORD ID | ord-c63ac4d64577403bbf22e709bd98a52a |
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| Source note | uspto-grants-2015_01 |
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