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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 239153Generated: October 29, 2026

tert-Butyl piperazine-1-carboxylate → HCID 86686508, compound

https://huagongshe.com/reaction/239153

Reaction equation

Participants

RoleNameHCIDCharge
Reactanttert-Butyl piperazine-1-carboxylateHCID 143452—
Reactant2,4-Dichloro-6,7-dihydrothieno[3,2-d]pyrimidineHCID 45789967—
SolventEthanolHCID 702—
SolventDichloromethaneHCID 6344—
ProductHCID 86686508HCID 8668650896.3%

Reaction Conditions

Temperature60 °C

Reaction Steps

454 mg piperazine-1-carboxylic acid tert-butyl ester in 5 mL ethanol was added to 0.5 g 2,4-dichloro-6,7-dihydro-thieno[3,2-d]pyrimidine in 5 mL dichlormethane. The reaction was stirred 2 h at RT, 3 h at 60° C. and over night at RT. The solvents were removed and water was added to the residue. The precipitate was filtered and dried to give 0.83 g of the desired product.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08642774B2
Source datasetuspto-grants-2014_02
ORD IDord-0e636662478e4814b2734b10dadf6ea2
Source noteuspto-grants-2014_02