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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1935702Generated: October 30, 2026

Sodium Hydroxide → 2-Amino-5-(3-hydroxyphenyl)pyrazine

https://huagongshe.com/reaction/1935702

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSodium HydroxideHCID 14798—
ReactantBoron tribromideHCID 25134—
Reactant2-Pyrazinamine, 5-(3-methoxyphenyl)-HCID 21897352—
SolventDichloromethaneHCID 6344—
Product2-Amino-5-(3-hydroxyphenyl)pyrazineHCID 2266075517.9%

Reaction Steps

2-amino-5-(3-methoxyphenyl)pyrazine (566 mg) was dissolved in methylene chloride (10 mL). To this mixture was added under ice-cooling boron tribromide (530 μL) and the whole was stirred at room temperature for 14 hours. To the reaction mixture was added 1N aqueous sodium hydroxide. The whole was extracted with ethylacetate (30 mL×2). The organic layer was washed with saturated saline solution and then dried over anhydrous Na2SO4. The concentration of the solvent provides the subject compound (94 mg) as a yellow solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06388077B1
Source datasetuspto-grants-2002_05
ORD IDord-fdd2ccaee8b0493a9f2072f1bdca46a0
Source noteuspto-grants-2002_05