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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1394169Generated: November 1, 2026

Ethyl cyanoacetate → 2-(1-ethyl-1H-imidazo[4,5-c]pyridin-2-yl)acetonitrile

https://huagongshe.com/reaction/1394169

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl cyanoacetateHCID 7764—
Reactant4-N-ethylpyridine-3,4-diamineHCID 12036392—
Product2-(1-ethyl-1H-imidazo[4,5-c]pyridin-2-yl)acetonitrileHCID 4683526237.3%

Reaction Steps

The product from Step 2 (500 mg, 3.6 mmole) and ethyl cyanoacetate (620 mg, 5.5 mmol) were heated together at 190° C. for 20 minutes. After cooling to room temperature, the residue was purified by column chromatography eluting with 10% methanol in ethyl acetate to afford the title compound (250 mg, 37%); MS (ES+) m/e 187 [M+H]+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07348339B2
Source datasetuspto-grants-2008_03
ORD IDord-ebcc45573a904d45bc1b6c093e6679a4
Source noteuspto-grants-2008_03