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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 19445Generated: October 26, 2026

2-(Ethoxymethylene)propanedinitrile → 3.7-diphenyl-3H-imidazo[4,5-b]pyridine

https://huagongshe.com/reaction/19445

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2-(Ethoxymethylene)propanedinitrileHCID 67152—
ReactantN2,4-diphenylpyridine-2,3-diamineHCID 59346194—
SolventIsopropanolHCID 3776—
Product3.7-diphenyl-3H-imidazo[4,5-b]pyridineHCID 5934616775%

Reaction Steps

0.70 mol of N2,4-diphenylpyridine-2,3-diamine and 2.56 mol of ethoxymethylene malononitrile were added in 10 ml of isopropanol, and refluxed for 6 hours. The solution was removed and was purified by using column chromatography to thereby produce a solid crystalline product at a yield of 75%.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07745020B2
Source datasetuspto-grants-2010_06
ORD IDord-40e8e1092dad4e8facb4458154b49562
Source noteuspto-grants-2010_06