Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1060775Generated: October 31, 2026

Hydrochloric Acid → HCID 57151150, compound

https://huagongshe.com/reaction/1060775

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantPiperidineHCID 8082—
ReactantOxindoleHCID 321710—
ReactantHCID 18002662HCID 18002662—
SolventWaterHCID 962—
SolventDimethylformamideHCID 6228—
ProductHCID 57151150HCID 5715115030.1%

Reaction Conditions

Temperature130 °C

Reaction Steps

A mixture of 0.66 g 5-methoxyindan-3-one acetic acid, 2.4 g oxindole and 1.0 ml piperidine in 3 ml of dimethylformamide was heated in a sealed tube at 130° C. for 14 hours. Three ml of 6N hydrochloric acid was added to the cooled reaction mixture followed by 3 ml of water. The supernatant was then decanted. The oily residue was heated in 5 ml of ethanol until it dissolved, the solution was then cooled and water was added. After standing overnight, a solid formed which was filtered and washed with ethanol. The solid was slurried in 4 ml of ethyl acetate at 70° C. for 45 minutes, filtered and suctioned dried to give 300 mg of [6-methoxy-3-(2-oxo-1,2-dihydroindol-3-ylidene)-indan-1-yl]-acetic acid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06525072B1
Source datasetuspto-grants-2003_02
ORD IDord-73abb46f31cd47b78785c5653e8ae01b
Source noteuspto-grants-2003_02