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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 723911Generated: October 29, 2026

Nitric Acid → HCID 21877762, compound

https://huagongshe.com/reaction/723911

Reaction equation

Participants

RoleNameHCIDCharge
ReactantNitric AcidHCID 944—
Reactant8-Fluoro-1,2,3,4-tetrahydroquinolin-2-oneHCID 15144873—
SolventSulfuric AcidHCID 1118—
ProductHCID 21877762HCID 2187776275%

Reaction Conditions

Temperature-5 °C

Reaction Steps

8-Fluoro-3,4-dihydro-1H-quinolin-2-one [prepared according to the procedure found in EP0524846] (2.62 g, 0.0159 mol) is dissolved in concentrated sulfuric acid (20 ml) and cooled to −5° C. Nitric acid (70%, 1.02 ml, 0.0159 mol) is added dropwise and the reaction stirred at −5° C. for 20 minutes. The mixture is poured onto ice and the resulting precipitate collected by filtration, washed well with water, and dried under vacuum. Purification by flash column chromatography (30% ethyl acetate/hexane) gives the title compound as a light yellow solid (2.50 g, 75%); [M+H]+=211.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07141588B2
Source datasetuspto-grants-2006_11
ORD IDord-f9ecd6c29b8d46df9d067d2acfbefb4d
Source noteuspto-grants-2006_11