HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 478715Generated: October 30, 2026
Hydrochloric Acid → HCID 57151150, compound
https://huagongshe.com/reaction/478715
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | Piperidine | HCID 8082 | — |
| Reactant | Oxindole | HCID 321710 | — |
| Reactant | HCID 18002662 | HCID 18002662 | — |
| Solvent | Water | HCID 962 | — |
| Solvent | Dimethylformamide | HCID 6228 | — |
| Product | HCID 57151150 | HCID 57151150 | 30.1% |
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
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patent number | US06642251B1 |
|---|
| Source dataset | uspto-grants-2003_11 |
|---|
| ORD ID | ord-11df8e1438df4a4fba31bd56555f69c1 |
|---|
| Source note | uspto-grants-2003_11 |
|---|