反应详情

A solution of 11.0 g of 6-tert-butyl-1-indanone, 12.5 ml of 3-buten-2-ol and 110 mg of p-toluenesulfonic acid in 110 ml of 2,2-dimethoxy-propane was boiled under reflux for 41 hours on a water separator filled with molecular sieve (0.4 nm, 2 mm pearl shaped). The reaction mixture was subsequently concentrated in a vacuum and purified by column chromatography on silica gel (hexane/diethyl ether 6:1). 7.35 g (53%) of (RS)-2-(2-buten-1-yl)-6-tert-butyl-1-indanone was obtained as a yellow oil.

1. additionseparator filled with molecular sieve (0.4 nm, 2 mm pearl shaped)
2. concentrationThe reaction mixture was subsequently concentrated in a vacuum
3. custompurified by column chromatography on silica gel (hexane/diethyl ether 6:1)