HuagongsheHuagongshe Chemistry Print Report · For research reference only
Ethylmorpholine → 4-((R)-2-tert-Butoxycarbonylamino-3-fluoro-propionyl)-piperazine-1-carboxylic acid butyl ester
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Ethylmorpholine | HCID 7525 | — |
| Reactant | O-[(Ethoxycarbonyl)cyanomethylenamino]-N,N,N',N'-tetramethyluronium tetrafluoroborate | HCID 2733286 | — |
| Reactant | (2R)-2-{[(tert-butoxy)carbonyl]amino}-3-fluoropropanoic acid | HCID 13105160 | — |
| Reactant | Butyl piperazine-1-carboxylate | HCID 21963126 | — |
| Solvent | Ethyl Acetate | HCID 8857 | — |
| Product | 4-((R)-2-tert-Butoxycarbonylamino-3-fluoro-propionyl)-piperazine-1-carboxylic acid butyl ester | HCID 68599836 | — |
Reaction Steps
To a solution of 150 mg (R)-2-tert-Butoxycarbonylamino-3-fluoro-propionic acid were added 0.18 ml N-ethylmorpholine, 237 mg TOTU and 115 mg 1-butoxycarbonylpiperazine. After stirring for 12 h the reaction mixture was diluted with ethyl acetate and washed with aqueous LiCl (4%), 0.1 M HCl, saturated aqueous NaHCO3 and brine. The crude product obtained was used without further purification. Yield: 230 mg.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US08669266B2 |
| Source dataset | uspto-grants-2014_03 |
| ORD ID | ord-e2f9b85c0f4a463a930a1a3dc7ff410a |
| Source note | uspto-grants-2014_03 |