Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1060776Generated: November 1, 2026

Hydrochloric Acid → HCID 69941282, compound

https://huagongshe.com/reaction/1060776

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantPiperidineHCID 8082—
Reactant5,6-Dimethoxy-1-indanoneHCID 75018—
ReactantOxindoleHCID 321710—
SolventEthanolHCID 702—
SolventDimethylformamideHCID 6228—
ProductHCID 69941282HCID 6994128220.8%

Reaction Conditions

Temperature130 °C

Reaction Steps

A mixture of 0.6 g 5,6-dimethoxy-1-indanone, 1.04 g oxindole and 2.3 ml piperidine in 4 ml dimethylformamide was heated in a sealed tube at 130° C. for 12 hours to yield an orange suspension. The mixture was added to 1N hydrochloric acid in ethanol and the solids which formed were filtered and rinsed with water and ethanol. The solid was slurried in ethanol and filtered to yield 200 mg of 3-(5,6-dimethoxyindan-1-ylidene)-1,3-dihydroindol-2-one.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06525072B1
Source datasetuspto-grants-2003_02
ORD IDord-a0da7110870c407ba68d55275ec4c040
Source noteuspto-grants-2003_02