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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 624698Generated: October 30, 2026

Piperidine → HCID 178518514, compound

https://huagongshe.com/reaction/624698

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperidineHCID 8082—
ReactantHydantoinHCID 10006—
ReactantHCID 58314336HCID 58314336—
SolventEthanolHCID 702—
ProductHCID 178518514HCID 17851851450.3%

Reaction Conditions

Temperature80 °C

Reaction Steps

To 5-(3-chloro-4-fluorophenylamino)-7-(cyclopropylmethylamino)pyrazolo[1,5-a]pyrimidine-3-carbaldehyde (40 mg, 0.09 mmol) in 1.0 mL of ethanol was added hydantoin (9 mg, 0.09 mmol) and piperidine (8 ul). The reaction was heated at 80° C. overnight, cooled to room temperature, filtered, and washed with ethanol to yield 20 mg (31% yield) (Z)-5-((5-(3-chloro-4-fluorophenylamino)-7-(cyclopropylmethylamino)pyrazolo[1,5-a]pyrimidin-3-yl)methylene) imidazolidine-2,4-dione as a yellow powder. LCMS (M+1=442)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09303033B2
Source datasetuspto-grants-2016_04
ORD IDord-dc7b8aa6940c4d9ab3b7be12f10b5fb9
Source noteuspto-grants-2016_04