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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 400391Generated: October 31, 2026

Barbituric Acid → 2,4,6-Trioxohexahydropyrimidine-5-carbaldehyde

https://huagongshe.com/reaction/400391

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBarbituric AcidHCID 6211—
ReactantDimethylformamideHCID 6228—
ReactantPhosphorus oxychlorideHCID 24813—
Product2,4,6-Trioxohexahydropyrimidine-5-carbaldehydeHCID 351701—

Reaction Steps

9.03 ml of phosphoryl chloride are added dropwise to 2 ml of dry DMF with ice-cooling. 1.5 g of barbituric acid are subsequently added, and the mixture is stirred at 100° for 4 h. The mixture is cooled, poured into ice-water, the precipitate is separated off, rinsed with water and dried at 45°, giving 2.5 g of “1”.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08741896B2
Source datasetuspto-grants-2014_06
ORD IDord-10417475da6d40dbb7657d2781a3f4df
Source noteuspto-grants-2014_06