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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 720263Generated: October 25, 2026

Pyrazole → HCID 28923713, compound

https://huagongshe.com/reaction/720263

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPyrazoleHCID 1048—
ReactantPotassium CarbonateHCID 11430—
Reactant(S)-1-(3-bromophenyl)ethanamineHCID 9952938—
CatalystCopper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)HCID 24350—
SolventN-methyl-2-pyrrolidoneHCID 13387—
ProductHCID 28923713HCID 2892371358%

Reaction Conditions

Temperature195 °C

Reaction Steps

To a solution of (S)-1-(3-bromo-phenyl)-ethylamine (1.5 g, 7.5 mmol) and pyrazole (1.02 g, 15 mmol) in N-methylpyrrolidinone (10 mL) in a quartz tube were added potassium carbonate (2.1 g, 15 mmol), and copper (1) iodide (143 mg, 0.75 mmole), and the resulting mixture was heated at 195° C. for 5 h in a Mars 5 microwave oven (600 W). The reaction mixture was cooled down to room temperature and filtered. The crude product was purified by flash chromatography (10% MeOH/89% EtOAc/1% triethylamine) to provide the title compound (814 mg, 58% yield) as a brown oil.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07135472B2
Source datasetuspto-grants-2006_11
ORD IDord-a2c5bdad4f314c1c9d0dead32160e32b
Source noteuspto-grants-2006_11