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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 236291Generated: October 29, 2026

Hydrochloric Acid → 6-Amino-1-cyclopropyl-5-nitroso-2,4(1H,3H)-pyrimidinedione

https://huagongshe.com/reaction/236291

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant6-Amino-1-cyclopropyl-1,2,3,4-tetrahydropyrimidine-2,4-dioneHCID 7131548—
ReactantSodium NitriteHCID 23668193—
SolventWaterHCID 962—
Product6-Amino-1-cyclopropyl-5-nitroso-2,4(1H,3H)-pyrimidinedioneHCID 54223493—

Reaction Steps

31.7 g (0.19 mol) of 6-amino-1-cyclopropyl-2,4-(1H,3H)-pyrimidinedione (II) was suspended in 250 ml water. To this was added 45 ml of 5N HCl and 15 g of NaNO2 (0.22 mol) which was dissolved in water. The reaction mixture was stirring for 2 hours and after cooling, the red crystals were filtered off and washed with water. Yield 31.9 g (86%) (III) NMR.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04644001
Source datasetuspto-grants-1987_02
ORD IDord-f7e9c70b647942d991d17c00b7db5480
Source noteuspto-grants-1987_02