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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1465186Generated: November 2, 2026

Thionyl Chloride → 4-Ethoxy-1-(4-fluorophenyl)pyrazole-3-carbonyl chloride

https://huagongshe.com/reaction/1465186

Reaction equation

Participants

RoleNameHCIDCharge
ReactantThionyl ChlorideHCID 24386—
Reactant4-ethoxy-1-(4-fluorophenyl)-1H-pyrazole-3-carboxylic acidHCID 33676677—
Product4-Ethoxy-1-(4-fluorophenyl)pyrazole-3-carbonyl chlorideHCID 86708158—

Reaction Steps

D3 (43 mg, 0.17 mmol, 1.0 eq.) was heated in thionyl chloride (1 mL) for 4 h at 67° C. Solvent was removed in vacuo and the crude material was resolved in dry toluene and evaporated under reduced pressure again to yield D4. The crude material was used in the next step without further purification.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08999982B2
Source datasetuspto-grants-2015_04
ORD IDord-087e8d4a4f25427b845d58d767064a5c
Source noteuspto-grants-2015_04