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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 478710Generated: October 30, 2026

Hydrochloric Acid → HCID 57292174, compound

https://huagongshe.com/reaction/478710

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantPiperidineHCID 8082—
Reactant5-amino-2,3-dihydro-1H-inden-1-oneHCID 312890—
ReactantOxindoleHCID 321710—
SolventDimethylformamideHCID 6228—
ProductHCID 57292174HCID 572921745%

Reaction Conditions

Temperature130 °C

Reaction Steps

A mixture of 0.5 g 5-amino-1-indanone, 1.3 g oxindole and 3 ml piperidine in 5 ml of dimethylforamide was heated in a sealed tube at 130° C. for 3 days to yield a reddish-black suspension. The mixture was added to 1N hydrochloric acid and extracted with ethyl acetate. The organic layer was washed with brine, dried with magnesium sulfate and concentrated. Chromatography afforded 45 mg of 3-(5-aminoindan-1-ylidene)-1,3-dihydroindol-2-one as a brown solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06642251B1
Source datasetuspto-grants-2003_11
ORD IDord-536728bf4af044a387a918b7fe9585c9
Source noteuspto-grants-2003_11