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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2256161Generated: October 29, 2026

Trifluoroacetic acid → 5-Amino-2-fluoroisonicotinic acid

https://huagongshe.com/reaction/2256161

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
Reactant5-((tert-Butoxycarbonyl)amino)-2-fluoroisonicotinic acidHCID 10611065—
Product5-Amino-2-fluoroisonicotinic acidHCID 276251175.6%

Reaction Steps

Reaction of 5-[N-(tert-butoxycarbonyl)amino]-2-fluoropyridine-4-carboxylic acid (1.0 g, 3.9 mmol) with TFA as described above gives 5-amino-2-fluoropyridine-4-carboxylic acid (0.46 g, 74%). 1H NMR (DMSO) δ 7.85 (1H, d, J=1.5 Hz), 7.23 (1H, d, J=2.5 Hz).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05654307
Source datasetuspto-grants-1997_08
ORD IDord-5af25e9f1c8f4a70941c6c52247c46bc
Source noteuspto-grants-1997_08