Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1862484Generated: November 1, 2026

Hydrochloric Acid → HCID 11107389, compound

https://huagongshe.com/reaction/1862484

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantEthanolHCID 702—
Reactant2-Fluoro-5-iodo-3-nitropyridineHCID 1514295—
CatalystIronHCID 23925—
SolventWaterHCID 962—
ProductHCID 11107389HCID 1110738953.2%

Reaction Conditions

Temperature80 °C

Reaction Steps

5-Iodo-3-nitro-2-fluoropyridine (1.739 g, 6.49 mmol), ethanol (13 mL), water (2 mL), and concentrated HCl (0.20 mL) were added to a 25 mL round bottom flask and allowed to stir. Iron (3.6 g, 64.4 mmol) was added in portions to the reaction followed by heating at 80° C. for 30 min. The iron was then removed and washed with ethanol over a fritted filter while the ethanol washings were concentrated under reduced pressure. The residue was purified by flash chromatography using 1:2 hexane:ethyl acetate as eluent to give 5-Iodo-2-fluoro-3-aminopyridine as a colorless solid (53%, 0.821 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06538010B1
Source datasetuspto-grants-2003_03
ORD IDord-ad11efefcb7640c383950108474e1ed5
Source noteuspto-grants-2003_03