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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 884955Generated: October 31, 2026

Pyridine → HCID 66881883, compound

https://huagongshe.com/reaction/884955

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPyridineHCID 1049—
Reactant1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 15908—
Reactant3-Chloropyridine-4-carboxylic acidHCID 2735816—
Reactant2-Amino-4-((trifluoromethyl)thio)phenolHCID 23023105—
SolventWaterHCID 962—
ProductHCID 66881883HCID 6688188363.3%

Reaction Conditions

Temperature80 °C

Reaction Steps

A mixture of 0.60 g of 2-amino-4-(trifluoromethylthio)phenol, 0.45 g of 3-chloroisonicotinic acid, 0.71 g of WSC and 6 ml of pyridine was stirred while heating at 80° C. for three hours. The reaction mixture was cooled to room temperature, and then water was added to the reaction mixture, followed by extraction with ethyl acetate three times. The combined organic layers were washed with water and a saturated sodium chloride solution, dried over anhydrous magnesium sulfate, and then concentrated under reduced pressure. The residue was subjected to silica gel column chromatography to give 0.63 g of 3-chloro-N-[2-hydroxy-5-(trifluoromethylthio)phenyl]isonicotinamide.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08242133B2
Source datasetuspto-grants-2012_08
ORD IDord-ce1d8a04cb054449ad027e26e1cdfcdc
Source noteuspto-grants-2012_08