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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 585483Generated: October 25, 2026

Water → (4aS,8aR)-4-(3,4-Dimethoxy-phenyl)-2-[1-(2-ethenesulfonyl-ethyl)-piperidin-4-yl]-4a,5,8,8a-tetrahydro-2H-phthalazin-1-one

https://huagongshe.com/reaction/585483

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantPotassium CarbonateHCID 11430—
Reactant1-Bromo-2-(2-bromoethanesulfonyl)ethaneHCID 139052—
Reactant(4aS,8aR)-4-(3,4-Dimethoxy-phenyl)-2-piperidin-4-yl-4a,5,8,8a-tetrahydro-2H-phthalazin-1-oneHCID 68878852—
SolventDimethylformamideHCID 6228—
Product(4aS,8aR)-4-(3,4-Dimethoxy-phenyl)-2-[1-(2-ethenesulfonyl-ethyl)-piperidin-4-yl]-4a,5,8,8a-tetrahydro-2H-phthalazin-1-oneHCID 69794500—

Reaction Steps

A solution of 10 mmol of compound 5c, 10 mmol of 1-bromo-2-(2-bromo-ethanesulfonyl)-ethane and 30 mmol of potassium carbonate in 30 ml of dimethylformamide is stirred at RT. After 18 h, the mixture is poured into water (150 ml) and subsequently extracted with ethyl acetate. Crystallisation from diethyl ether. M. p. 165-166° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06933296B2
Source datasetuspto-grants-2005_08
ORD IDord-bdbb32fed643458fa56fb083084babee
Source noteuspto-grants-2005_08