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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1815280Generated: October 26, 2026

Methyl 5-formyl-4-methyl-1H-pyrrole-2-carboxylate → 4-Methyl-5-(2-oxo-1,2-dihydroindol-3-ylidenemethyl)-1H-pyrrole-2-carboxylic acid methyl ester

https://huagongshe.com/reaction/1815280

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethyl 5-formyl-4-methyl-1H-pyrrole-2-carboxylateHCID 9834057—
ReactantIndol-2-oneHCID 17904787—
Product4-Methyl-5-(2-oxo-1,2-dihydroindol-3-ylidenemethyl)-1H-pyrrole-2-carboxylic acid methyl esterHCID 5416565381%

Reaction Steps

Oxoindole (105 mg, 0.79 mmol) was condensed with 5-formyl-4-methyl-1H-pyrrole-2-carboxylic acid methyl ester (110 mg, 0.67 mmol) using method E to give 153.2 mg (81%) of the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06878733B1
Source datasetuspto-grants-2005_04
ORD IDord-7935f83ca24748c0b9ace0c6a989c9ce
Source noteuspto-grants-2005_04