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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1585542Generated: November 2, 2026

Water → HCID 54357522, compound

https://huagongshe.com/reaction/1585542

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantDichloromethaneHCID 6344—
ReactantPotassium CarbonateHCID 11430—
ReactantHCID 53896521HCID 53896521—
SolventDimethylformamideHCID 6228—
ProductHCID 54357522HCID 54357522101.3%

Reaction Conditions

Temperature110 °C

Reaction Steps

To a solution of (1R)-N2 -(bromoacetyl)-1-(1H-indol-3-ylmethyl)-1,2-ethanediamine (3.30 g) in dimethylformamide (70 ml) was added potassium carbonate (3.30 g) at room temperature. The reaction mixture was stirred at 110° C. for 1 hour and 20 minutes. After cooling to room temperature, water and dichloromethane were added into the mixture, and the organic layer was separated. The aqueous layer was extracted successively with dichloromethane several times and a mixed solvent of ethyl acetate and methanol (10:1). The extracts were combined and dried over magnesium sulfate, and concentrated under reduced pressure to give (5R)-5-(1H-indol-3-ylmethyl)piperazin-2-one (2.47 g) as an oil.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05939413
Source datasetuspto-grants-1999_08
ORD IDord-6e8a1e3b2c2441dda7c0083b383aa2fc
Source noteuspto-grants-1999_08