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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

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperidineHCID 8082—
Reactant5-MethoxyoxindoleHCID 1514286—
Reactant4-oxo-4,5,6,7-tetrahydro-2H-pyrrolo[3,4-c]pyridine-1-carbaldehydeHCID 9964189—
SolventEthanolHCID 702—
Product1-(5-Methoxy-2-oxo-1,2-dihydro-indol-3-ylidenemethyl)-2,5,6,7-tetrahydro-pyrrolo[3,4-c]pyridin-4-oneHCID 49823032—

Reaction Conditions

Temperature80 °C

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

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06465507B2
Source datasetuspto-grants-2002_10
ORD IDord-4f07567b88184fe5be6f901578a7f6f5
Source noteuspto-grants-2002_10