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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2120234Generated: November 2, 2026

Piperidine → HCID 54057084, compound

https://huagongshe.com/reaction/2120234

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperidineHCID 8082—
Reactant6-Methyl-2-pyridinecarboxaldehydeHCID 70737—
Reactant4-(2-Hydroxyethyl)indolin-2-oneHCID 10943004—
SolventEthanolHCID 702—
ProductHCID 54057084HCID 54057084—

Reaction Conditions

Temperature100 °C

Reaction Steps

A mixture of 4-(2-hydroxy-ethyl)-1,3-dihydro-indol-2-one (89 mg, 0.5 mmol), 6-methyl-2-pyridine-carbaldehyde (61 mg, 0.5 mmol) and piperidine (0.1 mL) in 1.0 mL of ethanol was heated at 100° C. for 1 hour and cooled to room temperature. The precipitate was filtered and recrystallized from ethyl acetate and hexanes to give 4-(2-hydroxy-ethyl)-3-(6-methyl-pyridin-2-ylmethylene)-1,3-dihydro-indol-2-one as a yellow solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06689806B1
Source datasetuspto-grants-2004_02
ORD IDord-a6bf925c3bb34a9fb6ba904c1282653a
Source noteuspto-grants-2004_02