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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1196539Generated: October 29, 2026

Methylamine → 2-(4-Methyl-2H-phthalazin-1-on-2-yl)-N-methylethylamine hydrobromide

https://huagongshe.com/reaction/1196539

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethylamineHCID 6329—
Reactant2-(2-Bromoethyl)-4-methylphthalazin-1(2H)-oneHCID 21761486—
SolventEthanolHCID 702—
Product2-(4-Methyl-2H-phthalazin-1-on-2-yl)-N-methylethylamine hydrobromideHCID 19898933—

Reaction Steps

2-(4-Methyl-2H-phthalazin-1-on-2-yl)ethyl bromide (6.1 g) and methylamine (20 ml of 30% ethanolic methylamine) in ethanol (150 ml) were heated in a bomb at 100° for 2 hours. The solvent was removed and the residue triturated with ethyl acetate to give a yellow solid, which was recrystallised from ethanol to afford the title compound, yield 5.03 g, m.p. 219°-221°.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05114952
Source datasetuspto-grants-1992_05
ORD IDord-ffcfb01f686d4b679e8a92ca309b9900
Source noteuspto-grants-1992_05