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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 521245Generated: October 30, 2026

Hydrochloric Acid → HCID 86729420, compound

https://huagongshe.com/reaction/521245

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantSodium BicarbonateHCID 516892—
ReactantHCID 86729421HCID 86729421—
SolventTetrahydrofuranHCID 8028—
SolventEthyl AcetateHCID 8857—
ProductHCID 86729420HCID 86729420—

Reaction Conditions

Temperature80 °C

Reaction Steps

Aqueous hydrochloric acid (1 N, 36 mL, 36 mmol) was added to a solution of 3-amino-1-(8-(cyanomethyl)-1,4-dioxaspiro[4.5]decan-8-yl)-1H-pyrazole-4-carboxamide (Intermediate 35-5) (5.5 g, 18 mmol) in THF (106 mL). The reaction vessel was capped with a reflux condenser and heated to 80° C. for 2 hours. The reaction mixture was then cooled to ambient temperature, diluted with ethyl acetate, and neutralized with saturated aqueous sodium bicarbonate solution. The organic layer was separated and then washed with brine. The washed solution was dried over sodium sulfate, the dried solution was filtered, and the filtrate was concentrated to afford the title compound, which was used without further purification.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09328099B2
Source datasetuspto-grants-2016_05
ORD IDord-ddac5ebfba124d16a93a972d4469e975
Source noteuspto-grants-2016_05