Water → 5-(2-Diethylamino-ethyl)-2-(5-fluoro-2-oxo-1,2-dihydro-indol-3-ylidenemethyl)-3-hydroxymethyl-1,5,6,7-tetrahydro-pyrrolo[3,2-c]pyridin-4-one

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Reaction Steps

A solution of 7-bromo-5-(2-diethylamino-ethyl)-2-(5-fluoro-2-oxo-1,2-dihydro-indol-3-ylidenemethyl)-3-methyl-1,5,6,7-tetrahydro-pyrrolo[3,2-c]pyridin-4-one and 3-bromomethyl-5-(2-diethylamino-ethyl)-2-(5-fluoro-2-oxo-1,2-dihydro-indol-3-ylidenemethyl)-1,5,6,7-tetrahydro-pyrrolo[3,2-c]pyridin-4-one in 10 ml of methanol was added with saturated potassium carbonate (2 ml). The mixture was stirred at room temperature overnight, added with water (20 ml) and extracted with the 6 to 1 mixture of dichloromethane and methanol (10 ml×4). The combined extracts were concentrated to give 5-(2-diethylamino-ethyl)-2-(5-fluoro-2-oxo-1,2-dihydro-indol-3-ylidenemethyl)-3-hydroxymethyl-1,5,6,7-tetrahydro-pyrrolo[3,2-c]pyridin-4-one (13 mg, 72%) as a yellow solid.

Provenance & Evidence