HuagongsheHuagongshe Chemistry Print Report · For research reference only
1-Hydroxybenzotriazole → 4-{4-[(4'-Isopropyl-5-methyl-biphenyl-2-carbonyl)-amino]-phenyl}piperazine-1-carboxylic Acid Tert-Butyl Ester
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 1-Hydroxybenzotriazole | HCID 75771 | — |
| Reactant | 1,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride | HCID 2723939 | — |
| Reactant | tert-Butyl 4-(4-aminophenyl)piperazine-1-carboxylate | HCID 11011301 | — |
| Reactant | 4'-Isopropyl-5-methyl-biphenyl-2-carboxylic acid | HCID 18545450 | — |
| Solvent | Dichloromethane | HCID 6344 | — |
| Solvent | Triethylamine | HCID 8471 | — |
| Product | 4-{4-[(4'-Isopropyl-5-methyl-biphenyl-2-carbonyl)-amino]-phenyl}piperazine-1-carboxylic Acid Tert-Butyl Ester | HCID 54054782 | 52% |
Reaction Steps
To a stirred solution of 4-(4-amino-phenyl)-piperazine-1-carboxylic acid tert-butyl ester (4.15 g), 4′-isopropyl-5-methyl-biphenyl-2-carboxylic acid (3.81 g), HOBt (2.36 g), and Et3N (1.97 g) in CH2Cl2 (50 mL) was added EDCl (3.72 g) and the mixture was stirred at room temperature for 16 hours. The organic solution was then washed with water, with a saturated solution of NaHCO3, with brine and dried over Na2SO4. After filtration and evaporation of the filtrate, the residue was crystallized from diisopropyl ether to give the title compound (4 g) as white crystals.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US06552022B1 |
| Source dataset | uspto-grants-2003_04 |
| ORD ID | ord-4274c771fc4745b58400d346d47c7789 |
| Source note | uspto-grants-2003_04 |