HuagongsheHuagongshe Chemistry Print Report · For research reference only
1-Hydroxybenzotriazole → (s)-4-Tert-butoxycarbonylamino-5-[4-(3,5-dimethyl-phenyl)-piperazin-1-yl]-5-oxo-pentanoic acid tert-butyl ester
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 1-Hydroxybenzotriazole | HCID 75771 | — |
| Reactant | Diisopropylethylamine | HCID 81531 | — |
| Reactant | 1-(3,5-Dimethylphenyl)piperazine | HCID 2758626 | — |
| Reactant | (2S)-5-(tert-butoxy)-2-{[(tert-butoxy)carbonyl]amino}-5-oxopentanoic acid | HCID 6993432 | — |
| Solvent | 1,2-Dichloroethane | HCID 11 | — |
| Solvent | Dimethylformamide | HCID 6228 | — |
| Product | (s)-4-Tert-butoxycarbonylamino-5-[4-(3,5-dimethyl-phenyl)-piperazin-1-yl]-5-oxo-pentanoic acid tert-butyl ester | HCID 66920414 | — |
Reaction Steps
75 mg of Boc-Glu(OtBu)—OH and 44 mg HOBT was dissolved in 1 ml of DMF. 52 mg of 1-(3,5-Dimethyl-phenyl)-piperazine and 97 mg of DIPEA in 1 ml of DMF was added, followed by 43 mg of EDC in 0.5 ml of DMF. The mixture was stirred for 16 h at RT (closed tube). The mixture was filtered, and the filter was washed with 20 ml ethyl acetate in two portions. The collected filtrate was washed with 20 ml of a 5% Na2CO3 solution and 20 ml of brine, dried with sodium sulfate and evaporated under reduced pressure.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US08598179B2 |
| Source dataset | uspto-grants-2013_12 |
| ORD ID | ord-ba022fde12d54b23aa50014a2bd542fd |
| Source note | uspto-grants-2013_12 |