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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1869390Generated: November 2, 2026

Water → 2-Methyl-5-nitrophthalazin-1-one

https://huagongshe.com/reaction/1869390

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantMethyl iodideHCID 6328—
ReactantPotassium CarbonateHCID 11430—
Reactant5-Nitrophthalazin-1(2H)-oneHCID 20323190—
SolventDimethylformamideHCID 6228—
Product2-Methyl-5-nitrophthalazin-1-oneHCID 1798912591.4%

Reaction Steps

1.6 g of 5-nitro-phthalazin-1-one and 2.31 g of potassium carbonate are stirred for 10 minutes at room temperature in 60 ml of DMF. 1.1 ml of methyl iodide is added, and it is stirred overnight. It is added to water, extracted several times with ethyl acetate, and the organic phase is washed with water and brine. It is dried, and the solvent is removed in a vacuum. 1.57 g of 2-methyl-5-nitro-phthalazin-1-one is obtained as a yellow solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07638515B2
Source datasetuspto-grants-2009_12
ORD IDord-1bd588c3773f46c9aa04cf057b44c748
Source noteuspto-grants-2009_12