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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 478707Generated: October 30, 2026

Hydrochloric Acid → HCID 57114484, compound

https://huagongshe.com/reaction/478707

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantPiperidineHCID 8082—
Reactant5-Methoxyindan-1-oneHCID 78787—
ReactantOxindoleHCID 321710—
SolventDimethylformamideHCID 6228—
ProductHCID 57114484HCID 571144842.3%

Reaction Conditions

Temperature130 °C

Reaction Steps

A mixture of 0.5 g 5-methoxy-1-indanone, 1.23 g oxindole and 2.7 ml piperidine in 4 ml dimethylforamide was heated in a sealed tube at 130° C. for 3 days to yield a greenish-black suspension. The mixture was added to 1N hydrochloric acid solution and extracted with ethyl acetate. The organic layer was washed with brine, dried over magnesium sulfate and concentrated. Chromatography afforded 20 mg of 3-(5-methoxyindan-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-32f44c8856794a7b8b00c5af817c096d
Source noteuspto-grants-2003_11