HuagongsheHuagongshe Chemistry Print Report · For research reference only
Trifluoroacetic acid → 4-((R)-2-Amino-3-fluoro-propionyl)piperazine-1-carboxylic acid butyl ester
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Trifluoroacetic acid | HCID 6422 | — |
| Reactant | 4-((R)-2-tert-Butoxycarbonylamino-3-fluoro-propionyl)-piperazine-1-carboxylic acid butyl ester | HCID 68599836 | — |
| Solvent | Dichloromethane | HCID 6344 | — |
| Product | 4-((R)-2-Amino-3-fluoro-propionyl)piperazine-1-carboxylic acid butyl ester | HCID 68598169 | — |
Reaction Steps
To a solution of 230 mg 4-((R)-2-tert-Butoxycarbonylamino-3-fluoro-propionyl)-piperazine-1-carboxylic acid butyl ester in 5 ml dichloromethane was added 1.0 ml TFA. After 12 h stirring at RT the solvents were removed and the residue was codistilled twice with toluene. Yield: 307 mg.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US08669266B2 |
| Source dataset | uspto-grants-2014_03 |
| ORD ID | ord-dbbb33716249492ea3bef49b8e3a8ee8 |
| Source note | uspto-grants-2014_03 |