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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1295722Generated: October 26, 2026

Benzene, (2-bromoethoxy)- → 3-[4-(2-Phenoxyethyl)piperazin-1-yl]-1-[2-(2,4,5-trifluorophenoxy)ethyl]pyrazin-2(1H)-one, Hydrochloride

https://huagongshe.com/reaction/1295722

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzene, (2-bromoethoxy)-HCID 68526—
Reactant2(1H)-Pyrazinone, 3-(1-piperazinyl)-1-[2-(2,4,5-trifluorophenoxy)ethyl]-HCID 10405848—
Reactant3-(1-Piperazinyl)-1-[2-(2,4,5-trifluorophenoxy)ethyl]-2(1H)-pyrazinone, HydrochlorideHCID 11639709—
Product3-[4-(2-Phenoxyethyl)piperazin-1-yl]-1-[2-(2,4,5-trifluorophenoxy)ethyl]pyrazin-2(1H)-one, HydrochlorideHCID 131726526—

Reaction Steps

The title compound was prepared according to the procedure of Example 60 starting from 3-(1-piperazinyl)-1-[2-(2,4,5-trifluorophenoxy)ethyl]-2(1H)-pyrazinone (0.35 g, 1.0 mmol; from the free base of Example 3) and 2-bromoethyl phenyl ether (0.22 g, 1.1 mmol). Yield 0.14 g (27%). HPLC purity: 99%. HRMS calc for C24H25F3N4O3 (M)+ 474.1879, found 474.1887.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07244722B2
Source datasetuspto-grants-2007_07
ORD IDord-6e039fa45a634fc4a843a88994f3e7ad
Source noteuspto-grants-2007_07