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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 383687Generated: October 26, 2026

Piperidine → HCID 178518468, compound

https://huagongshe.com/reaction/383687

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperidineHCID 8082—
ReactantHydantoinHCID 10006—
Reactant5-(3-Chlorophenylamino)pyrazolo[1,5-a]pyrimidine-3-carbaldehydeHCID 58196528—
SolventEthanolHCID 702—
ProductHCID 178518468HCID 178518468—

Reaction Conditions

Temperature80 °C

Reaction Steps

To 5-(3-chlorophenylamino)pyrazolo[1,5-a]pyrimidine-3-carbaldehyde (50 mg, 0.184 mmol) in 1 mL EtOH was added hydantoin (54 mg, 0.552 mmol) and piperidine (54 μL, 0.552 mmol). The mixture was heated in microwave for 60 minutes at 80° C. The solid formed was isolated by filtration and air dried to give 5-((5-(3-chlorophenylamino)pyrazolo[1,5-a]pyrimidin-3-yl)methylene)imidazolidine-2,4-dione. LCMS (M+1=355)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08367681B2
Source datasetuspto-grants-2013_02
ORD IDord-7f9a1bcc23454f4c95c6967651f41dd3
Source noteuspto-grants-2013_02