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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1935699Generated: October 30, 2026

Water → HCID 135674088, compound

https://huagongshe.com/reaction/1935699

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantSodium CarbonateHCID 10340—
Reactant2-Amino-5-bromopyrazineHCID 599539—
Reactant4-Hydroxyphenylboronic acidHCID 2734360—
CatalystHCID 178418397HCID 178418397—
Solvent1,2-DimethoxyethaneHCID 8071—
ProductHCID 135674088HCID 135674088—

Reaction Conditions

Temperature80 °C

Reaction Steps

To a solution of 2-amino-5-bromopyrazine (366 mg) in dimethoxyethane (20 mL) was added 4-hydroxyphenylboronic acid (320 mL), 1.5N sodium carbonate aqueous solution (2.5 mL) and tetrakis(triphenylphosphine)palladium (0) (54 mg). The mixture was stirred at 80° C. for 3 hours. To the reaction mixture was added water (20 mL) and the whole was extracted with ethyl acetate (50 mL×3). The extract was washed with saturated saline solution, then dried over anhydrous Na2SO4. The removal of the solvent provided crystal residue, which was washed with diethyl ether (10 mL) to give the subject compound (305 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06388077B1
Source datasetuspto-grants-2002_05
ORD IDord-c50317199f1f4f779596c9871c2727ba
Source noteuspto-grants-2002_05