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
Participants
| Role | Name | HCID | Charge |
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| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | Lithium Hydroxide | HCID 3939 | — |
| Reactant | Tetrahydrofuran | HCID 8028 | — |
| Reactant | ethyl 5-(((1R)-2,2-difluorocyclopropyl)methoxy)-3-fluoropyridine-2-carboxylate | HCID 86731383 | — |
| Solvent | Ethanol | HCID 702 | — |
| Product | 5-(((1R)-2,2-difluorocyclopropyl)methoxy)-3-fluoropyridine-2-carboxylic Acid | HCID 86731384 | 81.9% |
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
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US09133129B2 |
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| Source dataset | uspto-grants-2015_09 |
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| ORD ID | ord-497ad9b8b8714cd3a7cad1e2139bd6df |
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| Source note | uspto-grants-2015_09 |
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