Piperidine → 3-[5-(3-Diethylamino-propyl)-1H-indol-2-ylmethylene]-5-phenyl-1,3-dihydro-indol-2-one

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Reaktionsschritte

A mixture of 5-phenyl-2-oxindole (41 mg, 0.19 mmol), 5-(3-diethylamino-propyl)-1H-indole-2-carbaldehyde (50 mg, 0.19 mmol) and piperidine(0.1 mL) in ethanol (1 mL) was heated in a sealed tube at 95° C. for 20 hours. The precipitate was collected by vacuum filtration, washed with ethanol and dried to give 10 mg (11 %) of the title compound as an orange crystalline solid.

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