Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1937576Generated: October 31, 2026

Piperidine → HCID 54437410, compound

https://huagongshe.com/reaction/1937576

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperidineHCID 8082—
Reactant3-(5-formyl-2,4-dimethyl-1H-pyrrol-3-yl)propanoic AcidHCID 1512520—
Reactant5-Methylindolin-2-oneHCID 5325716—
SolventEthanolHCID 702—
ProductHCID 54437410HCID 5443741064.2%

Reaction Steps

3-(2-Carboxyethyl)-2,4-dimethyl-5-formylpyrrole (97.5 mg), 74 mg 5-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 aqueous hydrochloric acid. The precipitate was filtered, washed with water to pH 6 and dried in a vacuum oven overnight to give 104 mg (64%) of the title compound as a yellow solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06395734B1
Source datasetuspto-grants-2002_05
ORD IDord-9efbf323f37a485eb2f84a9ae92db85d
Source noteuspto-grants-2002_05