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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1393688Generated: November 4, 2026

Urea → 4-Methylphthalimide

https://huagongshe.com/reaction/1393688

Reaction equation

Participants

RoleNameHCIDCharge
ReactantUreaHCID 1176—
Reactant4-Methylphthalic anhydrideHCID 88069—
SolventO-XyleneHCID 7237—
Product4-MethylphthalimideHCID 514826982%

Reaction Conditions

Temperature150 °C

Reaction Steps

Xylene (15 ml) was added to 4-methylphthalic anhydride (3.0 g) and urea (1.2 g), and the mixture was stirred overnight at 150° C. The reaction mixture was cooled to room temperature, and precipitated crystals were collected by filtration and washed with ethanol and water. The crystals were dried under reduced pressure to give 4-methylphthalimide (2.4 g, Y.:82%) as white crystals.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07345180B2
Source datasetuspto-grants-2008_03
ORD IDord-9d9e7086411246e183f3eb9d1bb7ce61
Source noteuspto-grants-2008_03