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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1815394Generated: October 29, 2026

Piperidine → HCID 69032764, compound

https://huagongshe.com/reaction/1815394

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperidineHCID 8082—
Reactant3-(5-formyl-2,4-dimethyl-1H-pyrrol-3-yl)propanoic AcidHCID 1512520—
Reactant4-Methyl-1,3-dihydro-2H-indol-2-oneHCID 12579382—
SolventEthanolHCID 702—
ProductHCID 69032764HCID 6903276437%

Reaction Steps

3-(2-Carboxyethyl)-2,4-dimethyl-5-formylpyrrole (97.5 mg), 74 mg 4-methyl-2-oxindole and 75 μL piperidine in 3 mL of ethanol were heated at 95° C. for 5 hours. The reaction mixture was cooled and concentrated. The residue was suspended in 6 N of aqueous hydrochloric acid. The precipitate was filtered, washed with water to pH 6 and dried in a vacuum oven overnight to give 60 mg (37%) of the title compound as a green solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06878733B1
Source datasetuspto-grants-2005_04
ORD IDord-0197d193dd144f608e0863275451e34a
Source noteuspto-grants-2005_04