Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 221987Generated: October 30, 2026

1,2-Dichloroethane → N'-(2-hydroxy-3-phenylpyrido[2,3-b]pyrazin-6-yl)nicotinohydrazide

https://huagongshe.com/reaction/221987

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1,2-DichloroethaneHCID 11—
ReactantNicotinic AcidHCID 938—
ReactantWaterHCID 962—
ReactantHCID 178514300HCID 178514300—
SolventN-methyl-2-pyrrolidoneHCID 13387—
ProductN'-(2-hydroxy-3-phenylpyrido[2,3-b]pyrazin-6-yl)nicotinohydrazideHCID 178523945—

Reaction Steps

To a mixture of 6-hydrazino-3-phenylpyrido[2,3-b]pyrazin-2-ol (3-3) (3.7 g, 14.5 mmol) and nicotinic acid (2.1 g, 17.4 mmol) in NMP (50 mL) was added EDC (3.1 g, 16.0 mmol), and stirred at room temperature for overnight. To the mixture was added water, and the resulting solid was collected by filtration to yield N-(2-hydroxy-3-phenylpyrido[2,3-b]pyrazin-6-yl)nicotinohydrazide (3-4).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08207169B2
Source datasetuspto-grants-2012_06
ORD IDord-2b5411ef05394b8583677cc249f58a3a
Source noteuspto-grants-2012_06