2-(pyridin-3-yl)-1H-indole → 3-[p-(2-Ethoxycarbonylpropen-1-yl)benzyl]-2-(3-pyridyl)indole

Participants

Reaction Steps

To 6.0 ml of a 2M solution of ethylmagnesium bromide in tetrahydrofuran under nitrogen at 0° is added dropwise over 20 minutes a solution of 2-(3-pyridyl)indole (1.9 g) in 12 ml of tetrahydrofuran. After complete addition the mixture is stirred at 0° for 0.5 hour and is then treated dropwise with a solution of 2.39 g of ethyl 3-(p-chloromethylphenyl)-2-methylacrylate in 5 ml of tetrahydrofuran. The resulting mixture is stirred at 0° for 1 hour, then at room temperature for 1 hour, and poured in 100 ml of ice-water. The resulting mixture is extracted with ether (2×50 ml) and the organic layer is washed with 100 ml of brine, dried over magnesium sulfate and evaporated to yield 3-[p-(2-ethoxycarbonylpropen-1-yl)benzyl]-2-(3-pyridyl)indole.

Provenance & Evidence