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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 632765Generated: October 30, 2026

Triethylamine → N-(4-bromo-1-methyl-1H-pyrazol-3-yl)-4-chlorobutanamide

https://huagongshe.com/reaction/632765

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTriethylamineHCID 8471—
ReactantAmmonium ChlorideHCID 25517—
Reactant4-Chlorobutyryl chlorideHCID 78370—
Reactant4-bromo-1-methyl-1H-pyrazol-3-amineHCID 2735283—
SolventTetrahydrofuranHCID 8028—
ProductN-(4-bromo-1-methyl-1H-pyrazol-3-yl)-4-chlorobutanamideHCID 118061399—

Reaction Conditions

Temperature0 °C

Reaction Steps

To a solution of 4-bromo-1-methyl-1H-pyrazol-3-amine (310 mg) and triethylamine (0.37 mL) in THF (8.8 mL) was added 4-chlorobutanoyl chloride (0.22 mL) under ice-cooling, and the mixture was stirred at 0° C. for 30 min. To the reaction mixture was added saturated aqueous ammonium chloride solution, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, and dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure to give the title compound (456 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09321757B2
Source datasetuspto-grants-2016_04
ORD IDord-1d3631e8debd4ebaa2d974ef803fcf94
Source noteuspto-grants-2016_04