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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 489256Generated: October 29, 2026

Einecs 211-027-4 → 1-Butyl-5,6-dimethyl-3-hydroxy-2-pyridone

https://huagongshe.com/reaction/489256

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEinecs 211-027-4HCID 69401—
Reactant1-Butyl-5,6-dimethyl-3-methoxy-2-pyridoneHCID 22266538—
SolventDiethyl EtherHCID 3283—
Product1-Butyl-5,6-dimethyl-3-hydroxy-2-pyridoneHCID 2226652581.3%

Reaction Conditions

Temperature200 °C

Reaction Steps

Pyridinium chloride (293 mg) was added to 1-butyl-5,6-dimethyl-3-methoxy-2-pyridone (1-004-07) (124 mg), and the reaction mixture was heated with stirring in an oil bath at 200° C. under nitrogen atmosphere. After 30 min, the reaction mixture was dissolved in diethyl ether and water, extracted twice with diethyl ether, washed once with water, and dried over magnesium sulfate. The solvent was evaporated under reduced pressure to give 1-butyl-5,6-dimethyl-3-hydroxy-2-pyridone (1-004-08) (94 mg, 81%, m.p.: 112-116° C.)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06977266B2
Source datasetuspto-grants-2005_12
ORD IDord-ed3c71d09bbd48f5b53b86e66b0f4395
Source noteuspto-grants-2005_12