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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1052291Generated: October 30, 2026

Triethylamine → 5-Bromo-2-(4-methyl-piperazin-1-yl)-benzonitrile

https://huagongshe.com/reaction/1052291

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTriethylamineHCID 8471—
Reactant1-MethylpiperazineHCID 53167—
Reactant5-Bromo-2-fluorobenzonitrileHCID 2724900—
Solvent1-ButanolHCID 263—
Product5-Bromo-2-(4-methyl-piperazin-1-yl)-benzonitrileHCID 5955833692.8%

Reaction Conditions

Temperature140 °C

Reaction Steps

A mixture of 5-bromo-2-fluorobenzonitrile (0.20 g, 1.0 mmol), 1-methylpiperizine (0.15 g, 1.5 mmol) and triethylamine (0.20 g, 2.0 mmol) in 1-butanol (3.0 mL) was heated at 140° C. for 2 hours. The solvent was removed under reduced pressure and the residue was diluted with ethyl acetate, washed with water, brine, dried over Na2SO4, filtered and concentrated to provide the desired product (0.26 g, 92%). LCMS calculated for C12H15BrN3(M+H)+: m/z=280.0. Found 280.0.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09388185B2
Source datasetuspto-grants-2016_07
ORD IDord-4084e5b7adf443d9bdc6568412fe4013
Source noteuspto-grants-2016_07