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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1594664Generated: October 30, 2026

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

https://huagongshe.com/reaction/1594664

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 numberUS06284768B1
Source datasetuspto-grants-2001_09
ORD IDord-09f438cd954349ebb4cc47ff6e4c4600
Source noteuspto-grants-2001_09