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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 912810Generated: October 25, 2026

Piperazine → 1-(3-Bromopyridin-2-yl)piperazine

https://huagongshe.com/reaction/912810

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperazineHCID 4837—
ReactantDiisopropylethylamineHCID 81531—
Reactant3-Bromo-2-chloropyridineHCID 693324—
Product1-(3-Bromopyridin-2-yl)piperazineHCID 13298529—

Reaction Conditions

Temperature200 °C

Reaction Steps

A mixture of 3-bromo-2-chloropyridine (0.96 g, 5 mmol, Aldrich), piperazine (0.86 g, 10 mmol, Aldrich) and N,N-diisopropylethylamine (1 mL, 5.8 mmol, Aldrich) was heated in a microwave synthesizer for 40 min at 200° C. The reaction mixture was concentrated and the residue was purified by column chromatography on silica gel, eluting with 10% MeOH in dichloromethane to give the title compound as a white amorphous solid. MS (ESI, pos. ion) m/z: 242 (M+1).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08026241B2
Source datasetuspto-grants-2011_09
ORD IDord-624b6e27cdbb47519691f5ddf39d1af8
Source noteuspto-grants-2011_09