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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2209211Generated: October 30, 2026

Acetic Anhydride → HCID 117843407, compound

https://huagongshe.com/reaction/2209211

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAcetic AnhydrideHCID 7918—
ReactantTriethylamineHCID 8471—
ReactantHCID 117843901HCID 117843901—
SolventDichloromethaneHCID 6344—
ProductHCID 117843407HCID 11784340783.1%

Reaction Steps

Acetic anhydride (5 μL, 0.05 mmol) was added to a solution of (R)-4-((R)-1-(6-(3-methoxy-4-(piperazin-1-yl)phenyl)pyrazolo[1,5-a]pyrazin-4-yloxy)ethyl)pyrrolidin-2-one 2,2,2-trifluoroacetate 5.48 (22.4 mg, 0.04 mmol) and triethylamine (0.05 ml, 0.33 mmol) in dichloromethane (1.8 mL) at room temperature. After two hours, reaction mixture was loaded directly onto silica and purified (0-8% methanol/dichloromethane) to yield (R)-4-((R)-1-((6-(4-(4-acetylpiperazin-1-yl)-3-methoxyphenyl)pyrazolo[1,5-a]pyrazin-4-yl)oxy)ethyl)pyrrolidin-2-one 5.49 (15.9 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09376441B2
Source datasetuspto-grants-2016_06
ORD IDord-fdfa771bac884bd1b366804e788f0250
Source noteuspto-grants-2016_06