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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 537478Generated: October 30, 2026

Potassium Carbonate → HCID 68156825, compound

https://huagongshe.com/reaction/537478

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium CarbonateHCID 11430—
Reactant5-Bromo-2-chloro-3-methylpyridineHCID 285434—
Reactant4-(Trifluoromethyl)-1H-pyrazoleHCID 12777795—
SolventDimethylformamideHCID 6228—
ProductHCID 68156825HCID 6815682530%

Reaction Conditions

Temperature107.5 °C

Reaction Steps

A flask was charged with 5-bromo-2-chloro-3-methylpyridine (250 mg, 1.21 mmol), 4-(trifluoromethyl)-1H-pyrazole (165 mg, 1.21 mmol), potassium carbonate (512 mg, 3.63 mmol), and anhydrous dimethylformamide (1.21 mL). The reaction was heated at 85 to 130° C. for 36 h. The reaction was concentrated to give 690 mg of crude material. Purification by silica gel flash chromatography (0-5% ethyl acetate in heptane) afforded 5-bromo-3-methyl-2-(4-(trifluoromethyl)-1H-pyrazol-1-yl)pyridine (containing approximately 30% starting material) was carried forth to the next reaction. MS (M+1) 308.1.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08859591B2
Source datasetuspto-grants-2014_10
ORD IDord-2bd02721b2fe41f1b9d066cdf97d10d0
Source noteuspto-grants-2014_10