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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1473347Generated: October 25, 2026

1-Methylpiperazine → Piperazine, 1-[2-bromo-5-(trifluoromethyl)phenyl]-4-methyl-

https://huagongshe.com/reaction/1473347

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1-MethylpiperazineHCID 53167—
Reactant4-Bromo-3-fluorobenzotrifluorideHCID 142414—
ProductPiperazine, 1-[2-bromo-5-(trifluoromethyl)phenyl]-4-methyl-HCID 86687472—

Reaction Conditions

Temperature180 °C

Reaction Steps

A microwave vial was charged with 1-methylpiperazine (1.371 ml, 12.35 mmol) and 4-bromo-3-fluorobenzotrifluoride (1.000 ml, 4.12 mmol), and was heated under microwave irradiation at 180° C. for 90 minutes. The reaction was concentrated under a vacuum, and the solids were then filtered and washed with DCM (the solids contained minor amounts of product but were disposed of). The filtrate was then concentrated under a vacuum to yield 1-(2-bromo-5-(trifluoromethyl)phenyl)-4-methylpiperazine. The material was carried forward without further purification. m/z (ESI) 323.0 (M+H)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09012443B2
Source datasetuspto-grants-2015_04
ORD IDord-ae73dd8efade4d2e897a6ae0a7f9723a
Source noteuspto-grants-2015_04