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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 624693Generated: October 30, 2026

Piperidine → HCID 178518487, compound

https://huagongshe.com/reaction/624693

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperidineHCID 8082—
ReactantHydantoinHCID 10006—
ReactantHCID 53240562HCID 53240562—
SolventEthanolHCID 702—
ProductHCID 178518487HCID 178518487—

Reaction Conditions

Temperature70 °C

Reaction Steps

To 5-(3-chlorophenylamino)-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidine-3-carbaldehyde (26 mg, 0.08 mmol) in EtOH was added hydantoin (8 mg, 0.08 mmol) and piperidine (8 μl, 0.08 mmol). The mixture was stirred at 70° C. over the weekend. Insolubilities were filtered off, and filtrate was concentrated under reduced pressure. Filtrate was then dissolved in MeOH and isolated by prep HPLC to yield 5-((5-(3-chlorophenylamino)-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidin-3-yl)methylene)imidazolidine-2,4-dione. LCMS (M+1=410)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09303033B2
Source datasetuspto-grants-2016_04
ORD IDord-e940f166a48443bdb7bf187a970f49fb
Source noteuspto-grants-2016_04