HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 991841Generated: October 31, 2026
Piperidine → 1-(5-Methoxy-2-oxo-1,2-dihydro-indol-3-ylidenemethyl)-2,5,6,7-tetrahydro-pyrrolo[3,4-c]pyridin-4-one
https://huagongshe.com/reaction/991841
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Piperidine | HCID 8082 | — |
| Reactant | 5-Methoxyoxindole | HCID 1514286 | — |
| Reactant | 4-oxo-4,5,6,7-tetrahydro-2H-pyrrolo[3,4-c]pyridine-1-carbaldehyde | HCID 9964189 | — |
| Solvent | Ethanol | HCID 702 | — |
| Product | 1-(5-Methoxy-2-oxo-1,2-dihydro-indol-3-ylidenemethyl)-2,5,6,7-tetrahydro-pyrrolo[3,4-c]pyridin-4-one | HCID 49823032 | — |
Reaction Steps
A mixture of 5-methoxy-1,3-dihydro-indol-2-one (32.6 mg, 0.2 mmol), 4-oxo-4,5,6,7-tetrahydro-2H-pyrrolo[3,4-c]pyridine-1-carbaldehyde (32.8 mg, 0.2 mmol) and 0.1 mL of piperidine in ethanol (1 mL) was heated in a sealed tube at 80° C. for 4 hours. The precipitate was collected by vacuum filtration, washed with cold ethanol and dried to give the title compound.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US06465507B2 |
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| Source dataset | uspto-grants-2002_10 |
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| ORD ID | ord-4f07567b88184fe5be6f901578a7f6f5 |
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| Source note | uspto-grants-2002_10 |
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