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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1497482Generated: October 30, 2026

Sodium Bicarbonate → HCID 11646459, compound

https://huagongshe.com/reaction/1497482

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSodium BicarbonateHCID 516892—
Reactant4-Trifluoromethyl-1,2-phenylenediamineHCID 520822—
Reactant4-(3-Chloropyridin-2-yl)benzoic acidHCID 22170454—
SolventHydrochloric AcidHCID 313—
ProductHCID 11646459HCID 1164645965.3%

Reaction Conditions

Temperature180 °C

Reaction Steps

To a solution of 0.64 g (2.75 mmol) 4-(3-chloropyridin-2-yl)benzoic acid in 25 mL 4N HCl was added 0.44 g (2.5 mmol) 4-trifluoromethylbenzene-1,2-diamine, followed by stirring at 180° C. for 6 hours. The solution was cooled to room temperature before the addition of 10% NaHCO3 (10 mL) and then extraction with ethyl acetate. The organic layer was dried over magnesium sulfate and vacuum concentrated. The residue thus obtained was separated using column chromatography (developing solvent: chloroform/methanol=30/1) to produce 0.61 g of 2-[4-(3-chloropyridin-2-yl)phenyl]-6-trifluoromethyl-1H-benzoimidazole (yield 65%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09199965B2
Source datasetuspto-grants-2015_12
ORD IDord-5127fb85a9434f9999dccba771952257
Source noteuspto-grants-2015_12