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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1951173Generated: November 2, 2026

Bromine → HCID 11254215, compound

https://huagongshe.com/reaction/1951173

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBromineHCID 24408—
Reactant4-PyridinylacetoneHCID 80552—
ReactantN-PyrazinylthioureaHCID 2771013—
Solvent1,4-DioxaneHCID 31275—
ProductHCID 11254215HCID 11254215—

Reaction Conditions

Temperature60 °C

Reaction Steps

To a stirred solution of 1-pyridin-4-yl-propan-2-one (0.1 g, 0.812 mmol) in dioxane (7 ml) is added bromine (0.029 ml, 0.569 mmol) dropwise. After 45 minutes, the solvent is removed in vacuo and the crude product is dissolved in ethanol (15 ml). The solution is treated with pyrazin-2-yl-thiourea (0.125 g, 0.812 mmol) and the reaction mixture is heated at 60° C. for 3 hours. The solvent is removed in vacuo and purification by chromatography on silica, eluting with ethyl acetate-methanol affords the titled compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08404684B2
Source datasetuspto-grants-2013_03
ORD IDord-b38a63c4e8674504a5ed42f9adfb254d
Source noteuspto-grants-2013_03