HuagongsheHuagongshe Chemistry Print Report · For research reference only
1-Hydroxybenzotriazole → (4-Boc-piperazin-1-yl)-(3-nitro-5-trifluoromethyl-phenyl)-methanone
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 1-Hydroxybenzotriazole | HCID 75771 | — |
| Reactant | Diisopropylethylamine | HCID 81531 | — |
| Reactant | tert-Butyl piperazine-1-carboxylate | HCID 143452 | — |
| Reactant | 3-Nitro-5-(trifluoromethyl)benzoic acid | HCID 616602 | — |
| Solvent | 1,2-Dichloroethane | HCID 11 | — |
| Solvent | Dichloromethane | HCID 6344 | — |
| Product | (4-Boc-piperazin-1-yl)-(3-nitro-5-trifluoromethyl-phenyl)-methanone | HCID 21959536 | — |
Reaction Steps
A mixture of 3-nitro-5-trifluoromethyl-benzoic acid (4.13 g), 4-Boc-piperazine (2.97 g), EDC (3.88 g), HOBt (2.74 g), DIEA (3.33 ml) in CH2Cl2 (120 ml) was stirred at RT for 3 h. The mixture was diluted with CH2Cl2 (100 ml), washed with sat'd NH4Cl, dried over MgSO4, filtered and concentrated. The residue was purified by silica gel chromatography (hexane, CH2Cl2:hexane 1:2) to give the compound as a white solid.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US08058445B2 |
| Source dataset | uspto-grants-2011_11 |
| ORD ID | ord-0b3ba5a5340643f6a42bebd18bad3caf |
| Source note | uspto-grants-2011_11 |