Potassium Hydroxide → 2-{5,6-dimethoxy-1-[2-(4-methyl-piperazin-1-yl)ethyl]-1H-indol-3-yl}-5-fluoro-1H-pyrrolo[2,3-b]pyridine

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Reaction Steps

But using 0.82 g of 2-[5,6-dimethoxy-1-[2-(4-methylpiperazin-1-yl)ethyl]-1H-indol-3-yl]-5-fluoro-1-(toluene-4-sulfonyl)-1H-pyrrolo[2,3-b]pyridine dissolved in 100 ml of methanol and 2 g of potassium hydroxide dissolved in 7 ml of water. After flash chromatography on a silica column [eluent: dichloromethane/methanol (70/30 by volume)], 0.37 g of 2-{5,6-dimethoxy-1-[2-(4-methyl-piperazin-1-yl)ethyl]-1H-indol-3-yl}-5-fluoro-1H-pyrrolo[2,3-b]pyridine is thus obtained in the form of a solid, the characteristics of which are as follows:

Provenance & Evidence