Potassium Carbonate → 5-fluoro-2-[1-(2-chloroethyl)-5,6-dimethoxy-1H-indol-3-yl]-1-(toluene-4-sulfonyl)-1H-pyrrolo[2,3-b]pyridine

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Reaction Steps

But using 2 g of 2-(5,6-dimethoxy-1H-indol-3-yl)-5-fluoro-1-(toluene-4-sulfonyl)-1H-pyrrolo[2,3-b]pyridine, 0.028 g of tetrabutylammonium bromide, 1.89 g of potassium hydroxide and 1.38 g of potassium carbonate in 50 ml of 1,2-dichloroethane. After flash chromatography on a silica column [eluent: dichloromethane/methanol (98.5/1.5 by volume)], 2.05 g of 5-fluoro-2-[1-(2-chloroethyl)-5,6-dimethoxy-1H-indol-3-yl]-1-(toluene-4-sulfonyl)-1H-pyrrolo[2,3-b]pyridine are thus obtained in the form of a solid, the characteristics of which are as follows:

Provenance & Evidence