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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1815281Generated: October 30, 2026

5-Chlorooxindole → 5-(5-Chloro-2-oxo-1,2-dihydroindol-3-ylidenemethyl)-4-methyl-1H-pyrrole-2-carboxylic acid ethyl ester

https://huagongshe.com/reaction/1815281

Reaction equation

Participants

RoleNameHCIDCharge
Reactant5-ChlorooxindoleHCID 152801—
ReactantEthyl 5-formyl-4-methyl-1H-pyrrole-2-carboxylateHCID 9855648—
Product5-(5-Chloro-2-oxo-1,2-dihydroindol-3-ylidenemethyl)-4-methyl-1H-pyrrole-2-carboxylic acid ethyl esterHCID 6728107394%

Reaction Steps

5-Chloro-1,3-dihydroindol-2-one (2.22 g, 13.2 mmol) was condensed with 5-formyl-4-methyl-1H-pyrrole-2-carboxylic acid ethyl ester (2.43 g) using method E to give 4.1 g (94%) of the title compound as an orange solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06878733B1
Source datasetuspto-grants-2005_04
ORD IDord-7d62d285c9644c198424b79cd1d198f7
Source noteuspto-grants-2005_04