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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 78863Generated: October 26, 2026

Hydrochloric Acid → 3-(4-Trifluoromethoxy-phenylamino)-isonicotinic acid

https://huagongshe.com/reaction/78863

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant3-Fluoropyridine-4-carboxylic acidHCID 345361—
Reactant4-(Trifluoromethoxy)anilineHCID 600848—
ReactantLithium HexamethyldisilazideHCID 2733832—
SolventTetrahydrofuranHCID 8028—
Product3-(4-Trifluoromethoxy-phenylamino)-isonicotinic acidHCID 576496389%

Reaction Conditions

Temperature-78 °C

Reaction Steps

3-Fluoro-isonicotinic acid (50 mg, 0.354 mmol) and 4-(trifluoromethoxy)aniline (62.8 mg, 0.354 mmol) was added to 2 ml dry THF and the mixture was cooled to −78° C. LiHMDS (1 M in THF, 1.24 ml) was added and the mixture was allowed to warm to room temperature over night. Hydrochloric acid (1 M in methanol, 5 ml) was added and the volatiles were removed in vacuo. The crude material was purified by preparative HPLC to give 9.5 mg (32 μmol; 9% yield) of pure desired product. LC-MS (method V): rt=2.69 min; m/z [M+H]+ 299.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08841459B2
Source datasetuspto-grants-2014_09
ORD IDord-84354e5714304780bf9a5807c6b430ab
Source noteuspto-grants-2014_09