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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 703455Generated: October 25, 2026

1-Phenylpiperazine → 2-{3-[4-(4-fluorobenzoyl)-piperidin-1-yl]-propyl}-6,7-dimethoxy-1(2H)-phthalazinone hydrochloride

https://huagongshe.com/reaction/703455

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1-PhenylpiperazineHCID 7096—
Reactant(4-Fluorophenyl)(piperazin-1-yl)methanoneHCID 771862—
Reactant2-(2-chloroethyl)-6,7-dimethoxy-1(2H)-phthalazinoneHCID 15391923—
Reactant2-(3-chloropropyl)-6,7-dimethoxy-1(2H)-phthalazinoneHCID 22150171—
SolventEthyl AcetateHCID 8857—
Product2-{3-[4-(4-fluorobenzoyl)-piperidin-1-yl]-propyl}-6,7-dimethoxy-1(2H)-phthalazinone hydrochlorideHCID 22150148—

Reaction Steps

Working as described in Example 3 but replacing 2-(2-chloroethyl)-6,7-dimethoxy-1(2H)-phthalazinone with an equivalent amount of 2-(3-chloropropyl)-6,7-dimethoxy-1(2H)-phthalazinone obtained as described in Example 13, and replacing N-phenylpiperazine with an equivalent amount of 4-(4-fluorobenzoyl)-piperazine, 2-{3-[4-(4-fluorobenzoyl)-piperidin-1-yl]-propyl}-6,7-dimethoxy-1(2H)-phthalazinone hydrochloride is obtained (m.p. 250°-252° C., from ethyl acetate).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04983606
Source datasetuspto-grants-1991_01
ORD IDord-d4ca02ec99a4431e93c2d9d564da5b07
Source noteuspto-grants-1991_01