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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 703968Generated: October 31, 2026

Hydrochloric Acid → 2-(2-Phenylpyrazolo[1,5-a]pyridin-3-yl)acetic acid

https://huagongshe.com/reaction/703968

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantMethanolHCID 887—
ReactantSodium HydroxideHCID 14798—
Reactant2-(2-Phenylpyrazolo[1,5-a]pyridin-3-yl)acetonitrileHCID 15158175—
Product2-(2-Phenylpyrazolo[1,5-a]pyridin-3-yl)acetic acidHCID 15158170—

Reaction Steps

A mixture of 2-(2-phenylpyrazolo[1,5-a]pyridin-3-yl)acetonitrile (0.23 g), 85% sodium hydroxide (0.33 g) and 80% aqueous methanol was refluxed for 15 hours. The reaction mixture was acidified with 5% hydrochloric acid (pH ≈1) and the precipitates were collected by filtration to give 2-(2-phenylpyrazolo[1,5-a]pyridin-3-yl)acetic acid (0.23 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04985444
Source datasetuspto-grants-1991_01
ORD IDord-df346579fc0e4fe5aae2db6158cc3208
Source noteuspto-grants-1991_01