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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1295723Generated: October 26, 2026

Phenethyl bromide → 3-[4-(2-Phenylethyl)piperazin-1-yl-]1-[2-(2,4,5-trifluorophenoxy)ethyl]pyrazin-2(1H)-one, Hydrochloride

https://huagongshe.com/reaction/1295723

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhenethyl bromideHCID 7666—
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-Phenylethyl)piperazin-1-yl-]1-[2-(2,4,5-trifluorophenoxy)ethyl]pyrazin-2(1H)-one, HydrochlorideHCID 10051451—

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 (0.71 g, 2.0 mmol; from the free base of Example 3) and (2-bromoethyl)benzene (0.41 g, 2.2 mmol). Yield: 0.20 g (20%). HPLC purity: 96%. HRMS calc for C24H25F3N4O2 (M)+ 458.1930, found 458.1928.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07244722B2
Source datasetuspto-grants-2007_07
ORD IDord-b5332316ce2f4ec6b0552eccf298c207
Source noteuspto-grants-2007_07