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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2086859Generated: October 30, 2026

Sodium Bicarbonate → 4-(3-Aminophenyl)-2-(3-pyridylmethyl)-3-oxo-3,4-dihydropyrido[2,3-b]pyrazine

https://huagongshe.com/reaction/2086859

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSodium BicarbonateHCID 516892—
ReactantHCID 22724195HCID 22724195—
SolventHydrochloric AcidHCID 313—
Product4-(3-Aminophenyl)-2-(3-pyridylmethyl)-3-oxo-3,4-dihydropyrido[2,3-b]pyrazineHCID 2272402691.5%

Reaction Steps

A solution of 4-(3-acetamidophenyl)-2-(3-pyridylmethyl)-3-oxo-3,4-dihydropyrido[2,3-b]pyrazine (0.9 g) in 4N hydrochloric acid (22 ml) was stirred under reflux for 90 minutes, and cooled. The reaction mixture was neutralized with solid sodium bicarbonate and precipitated white crystals were collected, washed with water and dried to give 4-(3-aminophenyl)-2-(3-pyridylmethyl)-3-oxo-3,4-dihydropyrido[2,3-b]pyrazine (0.73 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06727245B2
Source datasetuspto-grants-2004_04
ORD IDord-dc12c32e44e049b5887f83cbfb33383e
Source noteuspto-grants-2004_04