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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2277302Generated: October 30, 2026

Hydrochloric Acid → 5-(((1R)-2,2-difluorocyclopropyl)methoxy)-3-fluoropyridine-2-carboxylic Acid

https://huagongshe.com/reaction/2277302

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantLithium HydroxideHCID 3939—
ReactantTetrahydrofuranHCID 8028—
Reactantethyl 5-(((1R)-2,2-difluorocyclopropyl)methoxy)-3-fluoropyridine-2-carboxylateHCID 86731383—
SolventEthanolHCID 702—
Product5-(((1R)-2,2-difluorocyclopropyl)methoxy)-3-fluoropyridine-2-carboxylic AcidHCID 8673138481.9%

Reaction Conditions

Temperature0 °C

Reaction Steps

A mixture of ethyl 5-(((1R)-2,2-difluorocyclopropyl)methoxy)-3-fluoropyridine-2-carboxylate (808 mg), THF (10 mL), ethanol (10 mL) and 1M lithium hydroxide (10 mL) was stirred at 0° C. for 2 hr. The reaction mixture was neutralized with 1M hydrochloric acid at 0° C., and the mixture was extracted with ethyl acetate. The combined organic layer were washed with saturated brine, and dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure to give the title compound (594 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09133129B2
Source datasetuspto-grants-2015_09
ORD IDord-497ad9b8b8714cd3a7cad1e2139bd6df
Source noteuspto-grants-2015_09