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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1677025Generated: November 1, 2026

Hydrochloric Acid → HCID 21952711, compound

https://huagongshe.com/reaction/1677025

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant4-PiperidoneHCID 33721—
ReactantHydrazine, [2-(methylthio)phenyl]-HCID 3621444—
SolventEthanolHCID 702—
ProductHCID 21952711HCID 21952711—

Reaction Steps

The 2-(methylthio)phenyl hydrazine (5.32 g, 30.0 mmol) and 4-piperidone (4.07 g, 30.0 mmol) were partially dissolved in the ethanol (75 mL) and heated initially to reflux for 1 h. A heavy precipitate formed from the almost clear solution. The reaction was then treated with the conc hydrochloric acid (2.5 mL) and diluted with further ethanol (25 mL) to assist stirring and heating continued for a further 4 h. After cooling to RT overnight the solid was filtered washing isopropanol (25 mL). Obtained 7.70 g

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08008279B2
Source datasetuspto-grants-2011_08
ORD IDord-f238cd7d368b44e6905c72afd2188f9b
Source noteuspto-grants-2011_08