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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2037037Generated: October 29, 2026

Potassium Carbonate → HCID 58314118, compound

https://huagongshe.com/reaction/2037037

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium CarbonateHCID 11430—
Reactant2-(Piperazin-1-yl)pyridine-3-carbonitrileHCID 2737203—
Reactant5-Chloro-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidine-3-carbaldehydeHCID 58196647—
SolventDimethylformamideHCID 6228—
ProductHCID 58314118HCID 5831411835%

Reaction Conditions

Temperature95 °C

Reaction Steps

In a reaction flask, 2-(piperazin-1-yl)nicotinonitrile (22 mg, 0.11 mmol) was mixed with 5-chloro-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidine-3-carbaldehyde (27 mg, 0.11 mmol) in DMF (0.5 mL) along with potassium carbonate (32 mg, 0.23 mmol). The reaction was heated at 95° C. for 12 hours then partitioned between water and ethyl acetate. The organic layer was washed with water then saturated NaCl solution. The ethyl acetate layer was isolated, dried of anhydrous sodium sulfate, filtered, and evaporated to dryness. The product, 2-(4-(7-(cyclopropylamino)-3-formylpyrazolo[1,5-a]pyrimidin-5-yl)piperazin-1-yl)nicotinonitrile, was recovered in 35% yield (16 mg) after recrystallization from ethyl acetate/hexanes. LCMS (M+1=389)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08575177B2
Source datasetuspto-grants-2013_11
ORD IDord-faf838492e2f4e8b8086341f50d5b9c3
Source noteuspto-grants-2013_11