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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 617783Generated: October 30, 2026

Acetic Anhydride → HCID 21846387, compound

https://huagongshe.com/reaction/617783

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAcetic AnhydrideHCID 7918—
Reactant1,6-difluoronaphthaleneHCID 640620—
ReactantAluminum(III) ChlorideHCID 6451240—
Solvent1,2-DichloroethaneHCID 11—
ProductHCID 21846387HCID 2184638780%

Reaction Conditions

Temperature0 °C

Reaction Steps

1,6-Difluoronaphthalene (0.164 g, 1.0 mmol) was dissolved in 1,2-dichloroethane (5 mL) and cooled to 0° C. Aluminum trichloride (0.264 g, 2.0 mmol) was added as a solid to the solution. Acetic anhydride (0.1 mL, 1.0 mmol) was added slowly over 20 minutes to the solution while maintaining a temperature of 0° C. The reaction was poured onto ice-cold 10% aqueous hydrochloric acid and extracted with methylene chloride (2×10 mL). The organic layer was dried over sodium sulfate, concentrated, and purified by column chromatography to give 1-(4,7-difluoronaphth-1-yl)-ethanone as an oil (0.165 g, 80%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05952331
Source datasetuspto-grants-1999_09
ORD IDord-b4d360b9ead44763869b3e7b0ec9b5fa
Source noteuspto-grants-1999_09