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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1047620Generated: November 1, 2026

Hydrochloric Acid → Sodium Chloride

https://huagongshe.com/reaction/1047620

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantSodium HydroxideHCID 14798—
Reactantethyl 3-(2,4-difluorophenyl)-1-(3-hydroxybutan-2-yl)-1H-thieno[2,3-c]pyrazole-5-carboxylateHCID 66661487—
SolventMethanolHCID 887—
ProductSodium ChlorideHCID 5234879.8%
Product3-(2,4-Difluorophenyl)-1-(3-hydroxybutan-2-yl)-1H-thieno[2,3-c]pyrazole-5-carboxylic acidHCID 66661231—

Reaction Conditions

Temperature50 °C

Reaction Steps

To a solution of ethyl 3-(2,4-difluorophenyl)-1-(3-hydroxybutan-2-yl)-1H-thieno[2,3-c]pyrazole-5-carboxylate (134 mg, 0.352 mmol) in methanol (3.5 mL) was added sodium hydroxide (1 M, 1.06 mL, 1.06 mmol). The mixture was stirred at 50° C. for 18 hr. Hydrochloric acid (6M, 0.176 mL, 1.06 mmol) was added. The mixture was concentrated to give the title compound with three equivalents of sodium chloride (181 mg): LC-MS [M+1]=353.3.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08569512B2
Source datasetuspto-grants-2013_10
ORD IDord-75e86987a5fa4a0eb980af4c51fd45a3
Source noteuspto-grants-2013_10