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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 988211Generated: November 1, 2026

Piperidine → 2-Methyl-4-[3-(4-methylpiperazin-1-yl)propyl]-5-(2-oxo-4-pyridin-3-yl-1,2-dihydroindol-3-ylidenemethyl)-1H-pyrrole-3-carboxylic Acid Ethyl Ester

https://huagongshe.com/reaction/988211

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperidineHCID 8082—
Reactant4-Pyridin-3-yl-1,3-dihydroindol-2-oneHCID 22135407—
Reactant5-formyl-2-methyl-4-[3-(4-methylpiperazin-1-yl)propyl]-1H-pyrrole-3-carboxylic acid ethyl esterHCID 58779587—
SolventEthanolHCID 702—
Product2-Methyl-4-[3-(4-methylpiperazin-1-yl)propyl]-5-(2-oxo-4-pyridin-3-yl-1,2-dihydroindol-3-ylidenemethyl)-1H-pyrrole-3-carboxylic Acid Ethyl EsterHCID 69584082—

Reaction Conditions

Temperature70 °C

Reaction Steps

A mixture of 4-pyridin-3-yl-1,3-dihydroindol-2-one (42 mg, 0.2 mmol), 5-formyl-2-methyl-4-[3-(4-methylpiperazin-1-yl)-propyl]-1H-pyrrole-3-carboxylic acid ethyl ester (64 mg, 0.2 mmol) and piperidine (0.1 mL) in ethanol was heated in a sealed tube at 70° C. for 5 hours. The reaction was concentrated and the residue was purified by column chromatography to give the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06635640B2
Source datasetuspto-grants-2003_10
ORD IDord-9fe7ab9bae3444589a3e8653bb00730e
Source noteuspto-grants-2003_10