Dimethylformamide → (5-Bromo-2-oxo-1,2-dihydro-indol-3-ylidenemethyl)-3-phenyl-1,5,6,7-tetrahydro-pyrrolo[3,2-c]pyridin-4-one

Participants

Reaction Steps

A stirred solution of 4-oxo-3-phenyl-4,5,6,7-tetrahydro-1H-pyrrolo[3,2-c]pyridine-2-carbaldehyde (36 mg, 0.15 mmol), 5-bromo-1,3-dihydro-indol-2-one (33 mg, 0.146 mmol), piperidine (0.05 ml), N,N-dimethylformamide (0.05 ml) in anhydrous ethanol (0.75 ml) was heated to reflux for 2 hours and stirred at room temperature overnight. The resulting mixture was filtered to give (5-bromo-2-oxo-1,2-dihydro-indol-3-ylidenemethyl)-3-phenyl-1,5,6,7-tetrahydro-pyrrolo[3,2-c]pyridin-4-one (61 mg, 88%) as a yellow solid.

Provenance & Evidence