Ethanol → Ethyl 11-bromoundecanoate

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Reaction Steps

A solution of 11-bromoundecanoic acid (53 g, 0.2 mol) and concentrated sulphuric acid (1 ml) in ethanol (250 ml) was heated to reflux for 24 hr. After cooling to room temperature, the mixture was concentrated to half its original volume by evaporation under reduced pressure. The residue was poured into water (400 ml) and extracted with diethyl ether (3×300 ml). The combined extracts were then washed with saturated sodium bicarbonate solution (3×200 ml) and water (3×200 ml). After drying over MgSO4 the solvent was evaporated under reduced pressure to give a yellow coil (55.5 g, 95%)

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