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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2357569Generated: October 31, 2026

Potassium Carbonate → HCID 68455771, compound

https://huagongshe.com/reaction/2357569

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium CarbonateHCID 11430—
Reactant1-MethylpiperazineHCID 53167—
Reactant6-Bromo-1-chlorophthalazineHCID 22030424—
SolventAcetonitrileHCID 6342—
ProductHCID 68455771HCID 6845577191.1%

Reaction Conditions

Temperature180 °C

Reaction Steps

A mixture of 6-bromo-1-chlorophthalazine (Example 1, 0.12 g, 0.5 mmol), 1-methylpiperazine (0.11 mL, 1.0 mmol) and potassium carbonate (0.07 g, 0.5 mmol) in 5 mL acetonitrile was added to a glass microwave reaction vessel. The reaction mixture was stirred and heated in a Smith Synthesizer® microwave reactor (Personal Chemistry, Inc., Upssala, Sweden) at 180° C. for about 20 min. After about 20 min. all starting material was converted to product (M+1=307, 309). The mixture was concentrated under vacuum and purified via flash chromatography (silica gel) eluting with a gradient of 2% 2 M ammonia in MeOH/DCM to 6% 2M ammonia in MeOH/DCM to give (0.14 g) 6-bromo-1-(4-methylpiperazin-1-yl)phthalazine as a yellow solid. Found MS (ES+): 307, 309(M+H)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07759337B2
Source datasetuspto-grants-2010_07
ORD IDord-c9932d5d079d49cf88582b2521bf274d
Source noteuspto-grants-2010_07