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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2189342Generated: October 29, 2026

p-Toluenesulfonic acid → HCID 24855622, compound

https://huagongshe.com/reaction/2189342

Reaction equation

Participants

RoleNameHCIDCharge
Reactantp-Toluenesulfonic acidHCID 6101—
Reactant1-[4-(4-Aminophenyl)piperazin-1-yl]ethan-1-oneHCID 736269—
ReactantHCID 58015809HCID 58015809—
SolventDimethylformamideHCID 6228—
SolventEthyl AcetateHCID 8857—
ProductHCID 24855622HCID 2485562229.5%

Reaction Conditions

Temperature140 °C

Reaction Steps

To a mixture of 2-chloro-9-(1-ethyl-propyl)-7-methyl-7,9-dihydro-purin-8-one (102 mg, 0.4 mmol) and TsOH (1.6 mL, 0.2 M in 1,4-dioxane) in DMF (0.25 mL) is added 1-[4-(4-amino-phenyl)-piperazin-1-yl]-ethanone (105 mg, 0.5 mmol). The reaction mixture is sealed in a microwave reactor and heated at 140° C. for 30 min. The mixture is diluted with EtOAc and washed with NaHCO3 aqueous solution and brine. The organics are dried over Na2SO4, filtered and concentrated. The crude product is purified by preparative HPLC to give 50 mg of 2-[4-(4-acetyl-piperazin-1-yl)-phenylamino]-9-(1-ethyl-propyl)-7,9-dihydro-purin-8-one.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08324225B2
Source datasetuspto-grants-2012_12
ORD IDord-895b381a0ae84f1b87a8e39320aafd90
Source noteuspto-grants-2012_12