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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 49079Generated: October 27, 2026

Piperidine → 3-[5-(3-Pyrrolidin-1-yl-propyl)-1H-indol-2-ylmethylene]-1,3-dihydro-indol-2-one

https://huagongshe.com/reaction/49079

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperidineHCID 8082—
ReactantOxindoleHCID 321710—
Reactant5-(3-pyrrolidin-1-yl-propyl)-1H-indole-2-carbaldehydeHCID 22042122—
SolventEthanolHCID 702—
Product3-[5-(3-Pyrrolidin-1-yl-propyl)-1H-indol-2-ylmethylene]-1,3-dihydro-indol-2-oneHCID 6958655674%

Reaction Conditions

Temperature80 °C

Reaction Steps

A mixture of oxindole (27 mg, 0.2 mmol), 5-(3-pyrrolidin-1-yl-propyl)-1H-indole-2-carbaldehyde (51 mg, 0.2 mmol) and piperidine (0.1 mL) in ethanol (1 mL) was heated in a sealed tube at 80° C. for 3 hours. The precipitate was collected by vacuum filtration, washed with ethanol/ethyl acetate and dried to give 55 mg (74%) of the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06706709B2
Source datasetuspto-grants-2004_03
ORD IDord-e4d2057d889940e49863118355feab86
Source noteuspto-grants-2004_03