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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1700609Generated: October 27, 2026

Hydrochloric Acid → HCID 178424165, compound

https://huagongshe.com/reaction/1700609

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant4-Methyl-7-(2-methylphenyl)-5-oxo-cyclopenta[2,1-b]pyridineHCID 18317297—
ReactantHCID 178418668HCID 178418668—
SolventEthanolHCID 702—
ProductHCID 178424165HCID 17842416571.8%

Reaction Steps

A mixture of 4-methyl-7-(2-methylphenyl)-5-oxo-cyclopenta[2,1-b]pyridine (48 mg), aminoguanidine hydrochloride (25 mg) and concentrated hydrochloric acid (40 mg) in ethanol (1 ml) was refluxed for 2 hours. The reaction solution was cooled, and precipitated crystals were filtered, washed with ethanol and dried to give 5-guanidinoimino-4-methyl-7-(2-methylphenyl)cyclopenta[2,1-b]pyridine hydrochloride (Compound 91) (48 mg) as yellow crystals.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06350749B1
Source datasetuspto-grants-2002_02
ORD IDord-48ef27a0bc3d405cb74fed725068992e
Source noteuspto-grants-2002_02