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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1790924Generated: November 3, 2026

Piperidine → 5-Bromo-3-[5-(2-pyrrolidin-1-yl-ethoxy)-1H-indol-2-ylmethylene]-1,3-dihydro-indol-2-one

https://huagongshe.com/reaction/1790924

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperidineHCID 8082—
Reactant5-Bromo-2-oxindoleHCID 611193—
Reactant5-(2-pyrrolidin-1-yl-ethoxy)-1H-indole-2-carbaldehydeHCID 22042092—
SolventEthanolHCID 702—
Product5-Bromo-3-[5-(2-pyrrolidin-1-yl-ethoxy)-1H-indol-2-ylmethylene]-1,3-dihydro-indol-2-oneHCID 6958681980%

Reaction Conditions

Temperature100 °C

Reaction Steps

A mixture of 5-bromo-2-oxindole (42 mg, 0.2 mmol), 5-(2-pyrrolidin-1-yl-ethoxy)-1H-indole-2-carbaldehyde (52 mg, 0.2 mmol) and piperidine (0.1 mL) in ethanol (1 mL) was heated at 100° C. for 2 hours. The precipitate was collected by vacuum filtration, washed with ethanol and dried to give 72 mg (80%) of the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07071332B2
Source datasetuspto-grants-2006_07
ORD IDord-de55be6c638c4f83869efa1708c29f03
Source noteuspto-grants-2006_07