HuagongsheHuagongshe Chemistry Print Report · For research reference only
tert-Butyl piperazine-1-carboxylate → 4-[2-Chloro-6-(3-chloro-4-fluoro-phenyl)-pyrimidin-4-yl]-piperazine-1-carboxylic acid tert-butyl ester
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | tert-Butyl piperazine-1-carboxylate | HCID 143452 | — |
| Reactant | Sodium Bicarbonate | HCID 516892 | — |
| Reactant | 2,4-Dichloro-6-(3-chloro-4-fluoro-phenyl)-pyrimidine | HCID 57761058 | — |
| Solvent | Ethanol | HCID 702 | — |
| Product | 4-[2-Chloro-6-(3-chloro-4-fluoro-phenyl)-pyrimidin-4-yl]-piperazine-1-carboxylic acid tert-butyl ester | HCID 59168326 | — |
Reaction Steps
To a mixture of 2,4-dichloro-6-(3-chloro-4-fluoro-phenyl)-pyrimidine (0.12 mol) and NaHCO3 (1.95 g, 0.023 mol) in EtOH at 0° C., add piperazine-1-carboxylic acid tert-butyl ester (0.013 mol). Remove the ice bath and stir at room temperature for 16 h. Concentrate under reduced pressure and partition between EtOAc and brine. Dry the organic layer (Na2SO4) and concentrate under reduced pressure to give the title compound.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US08334382B2 |
| Source dataset | uspto-grants-2012_12 |
| ORD ID | ord-9f3ebe1d79b84ed882309811e0f78ce3 |
| Source note | uspto-grants-2012_12 |