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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1805394Generated: November 1, 2026

Piperidine → HCID 67230143, compound

https://huagongshe.com/reaction/1805394

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperidineHCID 8082—
Reactant4-FluorobenzaldehydeHCID 68023—
ReactantMethyl 2,3-dihydro-2-oxo-1H-indole-5-carboxylateHCID 2773516—
SolventEthanolHCID 702—
ProductHCID 67230143HCID 67230143—

Reaction Steps

To a solution of methyl-2-oxindole-5-carboxylate (4.764 g) in EtOH (100 mL) was added 4-fluoro-benzaldehyde (4.72 mL) in one portion, followed by piperidine (790 μL). The mixture was refluxed for 3 hours and the yellow precipitate was collected by filtration. The yellow product was used for the next step without further purification.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08354443B2
Source datasetuspto-grants-2013_01
ORD IDord-455d81f96b17452ebdb0c153cfc6dd8d
Source noteuspto-grants-2013_01