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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 891947Generated: October 30, 2026

Hydrochloric Acid → [6-(3-Chloro-4-fluoro-phenyl)-pyridazin-4-yl]-methanol

https://huagongshe.com/reaction/891947

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantWaterHCID 962—
ReactantEthyl AcetateHCID 8857—
ReactantHCID 22240138HCID 22240138—
Solvent1,4-DioxaneHCID 31275—
Product[6-(3-Chloro-4-fluoro-phenyl)-pyridazin-4-yl]-methanolHCID 2224012926%

Reaction Steps

3-(3-Chloro-4-fluoro-phenyl)-5-methoxymethoxymethyl-pyridazine (0.06 g, 0.21 mmol) was dissolved in dioxane (2 ml) and treated with 1N HCl (0.2 ml, 0.2 mmol). The reaction mixture was refluxed for 1.5 hours then cooled to room temperature. Water and ethyl acetate were added. The aqueous layer was extracted twice with ethyl acetate. The combined organic layers were dried over Na2SO4, filtered and concentrated in vacuo. The residue was chromatographed over silica gel (hexane-ethylacetate 1:1 then 2:8) to provide [6-(3-chloro-4-fluoro-phenyl)-pyridazin-4-yl]-methanol (13 mg, 26%) as a light yellow solid, MS: m/e=239.2 (M+H+).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07005432B2
Source datasetuspto-grants-2006_02
ORD IDord-18131378fce447d2b10a6396fc58823d
Source noteuspto-grants-2006_02