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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1381854Generated: November 4, 2026

6-Amino-1-butyl-1,2,3,4-tetrahydropyrimidine-2,4-dione → 1-Butyl-5-nitroso-6-aminouracil

https://huagongshe.com/reaction/1381854

Reaction equation

Participants

RoleNameHCIDCharge
Reactant6-Amino-1-butyl-1,2,3,4-tetrahydropyrimidine-2,4-dioneHCID 2428996—
ReactantSodium NitriteHCID 23668193—
SolventWaterHCID 962—
Product1-Butyl-5-nitroso-6-aminouracilHCID 10798570—

Reaction Steps

To 50.6 g (0.276 mol) of 6-amino-1-butyl-2,4-(1H,3H)-pyrimidinedione (VIII) dissolved in 1.8 l of wate at 80° C. was added 60 ml of 5N NCl and 20 g (0.29 mol) of NaNO2 which were dissolved in water. After cooling the red crystals were filtered off and washed with water. Yield 52.8 g (97%) (IX), NMR.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04804664
Source datasetuspto-grants-1989_02
ORD IDord-bab59f9f5fbf4139bc0de5e6dd3548d4
Source noteuspto-grants-1989_02