HuagongsheHuagongshe Chemistry Print Report · For research reference only
Tert-butyl 4-[2-cyano-4-(trifluoromethyl)phenyl]piperazine-1-carboxylate → 4-(2-Aminomethyl-4-trifluoromethyl-phenyl)-piperazine-1-carboxylic acid tert-butyl ester
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Tert-butyl 4-[2-cyano-4-(trifluoromethyl)phenyl]piperazine-1-carboxylate | HCID 59793685 | — |
| Reactant | HCID 178418361 | HCID 178418361 | — |
| Catalyst | Nickel | HCID 935 | — |
| Solvent | Ethanol, reaction products with ammonia, distn. residues | HCID 22020343 | — |
| Product | 4-(2-Aminomethyl-4-trifluoromethyl-phenyl)-piperazine-1-carboxylic acid tert-butyl ester | HCID 67416436 | 98.1% |
Reaction Steps
To a solution 4-(2-cyano-4-trifluoromethyl-phenyl)-piperazine-1-carboxylic acid tert-butyl ester (150 mg, 0.42 mmol) in NH3/EtOH (2M, 10 mL) was added Raney Nickel (3 mL slurry in water). The atmosphere was exchanged with hydrogen via balloon and the mixture was allowed to stir for 30 min. After this time the mixture was filtered through celite and concentrated to yield the title compound (148 mg). m/z (M+1) 360.23.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US08044041B2 |
| Source dataset | uspto-grants-2011_10 |
| ORD ID | ord-aa41e98393b74a2f86512878b1c764cc |
| Source note | uspto-grants-2011_10 |