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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 924955Generated: October 30, 2026

Pyridine → HCID 86669331, compound

https://huagongshe.com/reaction/924955

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPyridineHCID 1049—
ReactantAluminum(III) ChlorideHCID 6451240—
ReactantHCID 86669349HCID 86669349—
SolventDichloromethaneHCID 6344—
ProductHCID 86669331HCID 8666933162.1%

Reaction Steps

To the solution of 3,4-diethoxy-5-fluorobenzaldehyde (300 mg, 1.4 mmol) in DCM (50 mL) was added AlCl3 (207 mg, 1.55 mmol), and at 0° C., pyridine (230 mg, 2.8 mmol) was added, and the resulting mixture was refluxed overnight. The reaction mixture was cooled to room temperature, poured into ice water solution, and extracted with EtOAc. The organic layer was washed with brine, dried over Na2SO4, concentrated under reduced pressure, and purified by column chromatography on silica gel to give 3-ethoxy-5-fluoro-4-hydroxybenzaldehyde (160 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09283229B2
Source datasetuspto-grants-2016_03
ORD IDord-2cde06fc506044dca4b42a262e40045d
Source noteuspto-grants-2016_03