反应详情

To a solution of 3.35 g. of 11-hydroxy-3,7,11-trimethyldodeca-2,4-dienoic acid in 50 ml. ether at -20°C under nitrogen is added dropwise 59.1 ml. of a 0.67 molar solution of ethyllithium in benzene. The reaction mixture is allowed to warm to room temperature and is stirred overnight. The reaction mixture is then taken up in a mixture of ether and saturated aqueous ammonium chloride. The organic layer is separated, is washed with saturated aqueous ammonium chloride, 5% aqueous sodium bicarbonate, water, and saturated sodium chloride, is dried over calcium sulfate, and the solvent is removed to yield 13-hydroxy-5,9,13-trimethyltetradeca-4,6-dien-3-one which is purified by preparative thin layer chromatography (50% ether/hexane).

1. customThe organic layer is separated
2. washis washed with saturated aqueous ammonium chloride, 5% aqueous sodium bicarbonate, water, and saturated sodium chloride
3. dry with materialis dried over calcium sulfate
4. customthe solvent is removed