反应详情

8.85 g of 8-chloro-1-tetralone were dissolved in 90 ml of tetrachloromethane under argon and added to 21.0 ml of 3-buten-2-ol and 190 mg of p-toluenesulfonic acid. The reaction solution was heated to reflux on a water separator for 9 days. The solvent was removed in a vacuum and the residue was chromatographed on 200 g of silica gel firstly with hexane/ethyl acetate 9:1 and then with hexane/ethyl acetate 4:1. In addition to large amounts of unreacted educt (8.3 g), there were obtained 4.1 g (35%) of 2-(2-buten-1-yl)-8-chloro-1-tetralone as a yellow oil.

1. temperatureThe reaction solution was heated
2. customThe solvent was removed in a vacuum
3. customthe residue was chromatographed on 200 g of silica gel firstly with hexane/ethyl acetate 9:1
4. additionIn addition to large amounts of unreacted educt (8.3 g)