Ethanol → 2-Butyl-5-nitrobenzofuran

참여 물질

반응 단계

300 mg of 2-(n-butyl)-5-nitro-2,3-dihydrobenzofuran-3-ol were introduced into ethanol in a 50 ml flask, and 1 ml of concentrated sulphuric acid was added. The mixture was then heated to reflux for 4 hours. After cooling, 10 ml of water were added, the ethanol was distilled off, and the mixture was extracted with dichloromethane. Washing of the organic phase with sodium bicarbonate solution, drying over sodium sulphate and removal of the solvent in vacuo resulted in 220 mg (80% of theory) of 2-(n-butyl)-5-nitrobenzofuran as yellow oil.

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