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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1283711Generated: November 1, 2026

Hydrochloric Acid → 5-fluoro-1H-indazol-3-amine

https://huagongshe.com/reaction/1283711

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant2-Amino-5-fluorobenzonitrileHCID 2737704—
ReactantSodium NitriteHCID 23668193—
Product5-fluoro-1H-indazol-3-amineHCID 4327896—

Reaction Steps

By the procedure of Example 2, 13.6 g. of 2-cyano-4-fluoroaniline is treated with 8.0 g. of sodium nitrite and concentrated hydrochloric acid, followed by stannous chloride to give 3-amino-5-fluoroindazole.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUSRE028939
Source datasetuspto-grants-1976_08
ORD IDord-ed1e662a57e14dce96aaf57815ac46d4
Source noteuspto-grants-1976_08