Methyl vinyl sulfone → 1-{2-[2-(methylsulfonyl)ethoxy]-2-methylpropyl}-2-ethoxymethyl-1H-imidazo[4,5-c]quinoline

Participants

Reaction Steps

Using the general method of Example 8 Part D, 1-[2-(ethoxymethyl)-1H-imidazo[4,5-c]quinolin-1-yl]-2-methylpropan-2-ol (2.0 g, 6.7 mmol) was reacted with methyl vinyl sulfone (1.42 g, 13.4 mmol). The reaction mixture was quenched with water (50 mL) and extracted with ethyl acetate (3×50 mL). The combined extracts were washed with brine (50 mL), dried over anhydrous sodium sulfate, filtered, and concentrated under reduced pressure to provide crude product as an oil. This material was purified by column chromatography (silica gel eluting with 95/5 dichloromethane/methanol) to provide 1.75 g of 1-{2-[2-(methylsulfonyl)ethoxy]-2-methylpropyl}-2-ethoxymethyl-1H-imidazo[4,5-c]quinoline as a colorless foam.

Provenance & Evidence