Water → 5-[2-(p-[Ethoxycarbonylmethoxy]phenyl)ethen-1-yl]imidazo[1,5-a]pyridine

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Reaction Steps

A solution of 5-[2-(p-hydroxyphenyl)ethen-1-yl]imidazo[1,5-a]pyridine (2.36 g) in 10 ml of dimethylformamide is added to a slurry of 0.5 g of sodium hydride in 30 ml of dry dimethylformamide at 0° under nitrogen. After warming to room temperature ethyl bromoacetate (1.67 g) is added and the reaction is heated to 60° for 5 hours. Water (200 ml) is added and the solution is extracted with ethyl acetate. The combined organic phases are washed with water, dried over sodium sulfate and evaporated to yield 5-[2-(p-[ethoxycarbonylmethoxy]phenyl)ethen-1-yl]imidazo[1,5-a]pyridine.

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