HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 49079Generated: October 27, 2026
Piperidine → 3-[5-(3-Pyrrolidin-1-yl-propyl)-1H-indol-2-ylmethylene]-1,3-dihydro-indol-2-one
https://huagongshe.com/reaction/49079
Participants
| Role | Name | HCID | Charge |
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| Reactant | Piperidine | HCID 8082 | — |
| Reactant | Oxindole | HCID 321710 | — |
| Reactant | 5-(3-pyrrolidin-1-yl-propyl)-1H-indole-2-carbaldehyde | HCID 22042122 | — |
| Solvent | Ethanol | HCID 702 | — |
| Product | 3-[5-(3-Pyrrolidin-1-yl-propyl)-1H-indol-2-ylmethylene]-1,3-dihydro-indol-2-one | HCID 69586556 | 74% |
Reaction Steps
A mixture of oxindole (27 mg, 0.2 mmol), 5-(3-pyrrolidin-1-yl-propyl)-1H-indole-2-carbaldehyde (51 mg, 0.2 mmol) and piperidine (0.1 mL) in ethanol (1 mL) was heated in a sealed tube at 80° C. for 3 hours. The precipitate was collected by vacuum filtration, washed with ethanol/ethyl acetate and dried to give 55 mg (74%) of the title compound.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US06706709B2 |
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| Source dataset | uspto-grants-2004_03 |
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| ORD ID | ord-e4d2057d889940e49863118355feab86 |
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| Source note | uspto-grants-2004_03 |
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