Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2357674Generated: November 2, 2026

Potassium Carbonate → 4-(6-Bromophthalazin-1-yl)-3-methylpiperazin-2-one

https://huagongshe.com/reaction/2357674

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium CarbonateHCID 11430—
Reactant3-Methyl-2-ketopiperazineHCID 5106600—
Reactant6-Bromo-1-chlorophthalazineHCID 22030424—
SolventAcetonitrileHCID 6342—
Product4-(6-Bromophthalazin-1-yl)-3-methylpiperazin-2-oneHCID 6845309760.5%

Reaction Conditions

Temperature190 °C

Reaction Steps

In three separate sealed tubes were placed a mixture of 6-bromo-1-chlorophthalazine (0.250 g, 1.03 mmol), 3-methylpiperazin-2-one (0.239 g, 2.09 mmol), K2CO3 (0.155 g, 1.12 mmol) and 5 mL of CH3CN. The three reactions were heated at 190° C. for 15 min in a microwave oven. The reaction mixtures were combined, concentrated onto silica gel and purified using flash chromatography eluting with 2M NH3 in MeOH/CH2Cl2 (0:1→1:19) to give 200 mg (60%) of an orange oil.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07759337B2
Source datasetuspto-grants-2010_07
ORD IDord-d5d1e10686c64ea5904b85bc59a4df5b
Source noteuspto-grants-2010_07