HuagongsheHuagongshe Chemistry Print Report · For research reference only
Hydrochloric Acid → (S)-2-{[5-(3,3-Dimethyl-2-oxo-butoxy)-1-phenyl-1H-pyrazole-3-carbonyl]-amino}-pentanedioic acid 5-tert-butyl ester
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | Sodium Hydroxide | HCID 14798 | — |
| Reactant | (S)-2-{[5-(3,3-Dimethyl-2-oxo-butoxy)-1-phenyl-1H-pyrazole-3-carbonyl]-amino}-pentanedioic acid 5-tert-butyl ester 1-methyl ester | HCID 66920060 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | (S)-2-{[5-(3,3-Dimethyl-2-oxo-butoxy)-1-phenyl-1H-pyrazole-3-carbonyl]-amino}-pentanedioic acid 5-tert-butyl ester | HCID 66919946 | 94.2% |
Reaction Steps
1 M aqueous NaOH was added to a solution of 11.8 g (S)-2-{[5-(3,3-dimethyl-2-oxo-butoxy)-1-phenyl-1H-pyrazole-3-carbonyl]-amino}-pentanedioic acid 5-tert-butyl ester 1-methyl ester in 31 ml THF at RT. After 2 h 5 M HCl was added to bring the reaction mixture to pH 5. Extraction with DCM yielded the product as colorless solid (10.8 g).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US08598179B2 |
| Source dataset | uspto-grants-2013_12 |
| ORD ID | ord-7b21987fc34d4a6cb740de6d4d9c85a0 |
| Source note | uspto-grants-2013_12 |