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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1282149Generated: October 31, 2026

Piperazine → 1-Piperazinylpyrazine

https://huagongshe.com/reaction/1282149

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperazineHCID 4837—
ReactantSodium HydroxideHCID 14798—
ReactantChloropyrazineHCID 73277—
Product1-PiperazinylpyrazineHCID 2734639—

Reaction Conditions

Temperature150 °C

Reaction Steps

To piperazine (48.0 g) dissolved at 110° C. was added 2-chloropyrazine (5.0 ml) and the mixture was stirred at 150° C. for 2 hr. The reaction mixture was poured into an aqueous sodium hydroxide solution and extracted with chloroform. The extract was washed with saturated brine and dried over anhydrous sodium sulfate. The solvent was evaporated to give the title compound (6.4 g) as a brown oil.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06455528B1
Source datasetuspto-grants-2002_09
ORD IDord-2806060a047544bb9617e8ed6e1792e5
Source noteuspto-grants-2002_09