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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1248305Generated: October 27, 2026

Hydrochloric Acid → 3,4-Dimethoxy-2-methyl-1-oxo-1lambda~5~-pyridine

https://huagongshe.com/reaction/1248305

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantMethanolHCID 887—
ReactantSodium MethoxideHCID 10942334—
Reactant2-methyl-3-fluoro-4-nitropyridine-N-oxideHCID 19791169—
Product3,4-Dimethoxy-2-methyl-1-oxo-1lambda~5~-pyridineHCID 10749647—

Reaction Steps

A solution of sodium methoxide (from 0.535 g sodium) in dry methanol (40 ml) was added dropwise to a stirred suspension of 3-fluoro-2-methyl-4-nitropyridine N-oxide (2 g) in dry methanol (50 ml) and the mixture was stirred overnight. Additional sodium methoxide (from 0.053 g sodium) was added and the mixture was heated under reflux for 1 hour. The mixture was neutralised with hydrochloric acid and evaporated to dryness. The residue was extracted with chloroform and the extract was evaporated to dryness to give 3,4-dimethoxy-2-methylpyridine N-oxide.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04523015
Source datasetuspto-grants-1985_06
ORD IDord-25325235f06e4b18938c325161a6131e
Source noteuspto-grants-1985_06