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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2209216Generated: November 1, 2026

HCID 117843199, compound → (R)-4-((R)-1-((6-chloro-3-methylpyrazolo[1,5-a]pyrazin-4-yl)oxy)ethyl)pyrrolidin-2-one

https://huagongshe.com/reaction/2209216

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHCID 117843199HCID 117843199—
SolventTrifluoroacetic acidHCID 6422—
Product(R)-4-((R)-1-((6-chloro-3-methylpyrazolo[1,5-a]pyrazin-4-yl)oxy)ethyl)pyrrolidin-2-oneHCID 117843177101.8%

Reaction Conditions

Temperature60 °C

Reaction Steps

(R)-4-((R)-1-(6-chloro-3-methylpyrazolo[1,5-a]pyrazin-4-yloxy)ethyl)-1-((R)-1-(4-methoxyphenyl)ethyl)pyrrolidin-2-one 5.53 (31 mg, 0.07 mmol) was dissolved in 1.5 mL of TFA and mixture was heated at 60° C. After 17 hours, reaction mixture was cooled to rt and concentrated under reduced pressure. Resulting residue was taken up in ethyl acetate and washed with sat NaHCO3 (aq). Layers were separated and aqueous was extracted with ethyl acetate. Combined organics were washed with 1:1 sat. NaHCO3 (aq)/brine, dried, filtered, and concentrated under reduced pressure to yield (R)-4-((R)-1-((6-chloro-3-methylpyrazolo[1,5-a]pyrazin-4-yl)oxy)ethyl)pyrrolidin-2-one 5.54 (21 mg), which was used without further purification.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09376441B2
Source datasetuspto-grants-2016_06
ORD IDord-886c2693e3bf44af950702976df438f6
Source noteuspto-grants-2016_06