HuagongsheHuagongshe Chemistry Print Report · For research reference only
Water → Ethyl 4-(2,5-dichlorobenzyl)piperazine-1-carboxylate
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Water | HCID 962 | — |
| Reactant | 1-Piperazinecarboxylic acid, ethyl ester | HCID 8431 | — |
| Reactant | Potassium Carbonate | HCID 11430 | — |
| Reactant | 2,5-Dichlorobenzyl chloride | HCID 75976 | — |
| Solvent | Dimethylformamide | HCID 6228 | — |
| Product | Ethyl 4-(2,5-dichlorobenzyl)piperazine-1-carboxylate | HCID 22458123 | 63% |
Reaction Steps
2,5-Dichlorobenzyl chloride (2.01 g) was added to a mixture of 1.94 g of 1-ethoxycarbonylpiperazine and 3.45 g of anhydrous potassium carbonate in 20 ml of N,N-dimethylformamide stirred at room temperature in nitrogen atmosphere. After 24 h of stirring at the same temperature, the reaction mixture was poured into water and extracted with ethyl acetate. The organic phase, which was dried on anhydrous Na2SO4, was evaporated to dryness under vacuum. The oily residue was purified via flash chromatography (petrolium ether-ethyl acetate 85:15) giving 2 g (63%) of the title compound.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US06399614B1 |
| Source dataset | uspto-grants-2002_06 |
| ORD ID | ord-4d42814bec4e48b4b2a0f94eaea3083e |
| Source note | uspto-grants-2002_06 |