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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1387272Generated: October 25, 2026

Bromine → 5-Bromo-2-hydroxy-4-methyl-3-nitropyridine

https://huagongshe.com/reaction/1387272

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBromineHCID 24408—
Reactant2-Hydroxy-4-methyl-3-nitropyridineHCID 345370—
ReactantSodium AcetateHCID 517045—
SolventAcetic AcidHCID 176—
SolventEthyl AcetateHCID 8857—
Product5-Bromo-2-hydroxy-4-methyl-3-nitropyridineHCID 2170651790%

Reaction Steps

To a stirred solution of 4-methyl-3-nitro-2-pyridone (0.45 g, 2.9 mmol) in glacial acetic acid (3 mL) was added sodium acetate (0.24 g) followed by bromine (0.15 mL) dropwise. After 5.5 hours, the mixture was diluted with ethyl acetate, washed with water, dried, filtered and concentrated to give 5-bromo-4-methyl-3-nitro-2-pyridone (0.62 g, 2.6 mmol, 90%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06268365B1
Source datasetuspto-grants-2001_07
ORD IDord-ff99ebcc0a0c492eb6637ad3ceb0939a
Source noteuspto-grants-2001_07