反应详情

3-(3-Dimethylaminopropyl)-4,5,6,7-tetrahydro-1H-indole-2-carbaldehyde (71 mg, 0.3 mmol), 5-methylaminosulfonyloxindole (68 mg, 0.3 mmol) and piperidine (0.03 ml) in 1 ml of ethanol was stirred at 60° C. for over night. The mixture was cooled and the solids collected by vacuum filtration and washed with ethanol to give (93 mg, 70% yield) of 3-[1-[3-(3-dimethylaminopropyl)-4,5,6,7-tetrahydro-1H-indol-2-yl]-meth-(Z)-ylidene]-2-oxo-2,3-dihydro-1H-indole-5-sulfonic acid methylamide.

1. temperatureThe mixture was cooled
2. filtrationthe solids collected by vacuum filtration
3. washwashed with ethanol