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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 31053Generated: October 29, 2026

Water → HCID 86601048, compound

https://huagongshe.com/reaction/31053

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantSodium NitriteHCID 23668193—
Reactant6-Amino-1-isobutyl-2-thioxo-2,3-dihydro-1H-pyrimidin-4-oneHCID 86601049—
SolventAcetic AcidHCID 176—
ProductHCID 86601048HCID 8660104896.4%

Reaction Conditions

Temperature75 °C

Reaction Steps

6-Amino-1-isobutyl-2-thioxo-2,3-dihydro-1H-pyrimidin-4-one (1.0 g, 5.0 mmol) was suspended in 10% acetic acid (20 mL). Sodium nitrite (0.38 g, 5.5 mmol) was added and the resulting mixture was heated at 75° C. for 1 h. The reaction mixture became first pink and then purple. The purple mixture was cooled to room temperature. Then water (20 mL) was added and the purple solid was collected by filtration and washed with water to give the title compound (1.1 g, 92% yield). This solid was used in the following step without further purification.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07425560B2
Source datasetuspto-grants-2008_09
ORD IDord-5d11d0c8f3e44bd3b01e763a565a9d7f
Source noteuspto-grants-2008_09