反应详情

Triethylamine (1.2 g) was added to a solution of 2-butyryl-5,5-dimethyl -3-hydroxy-4-phenyl cyclohex-2-ene-1-one (2.8 g) and O-allylhydroxylamine hydrochloride (1.2 g) in ethanol (50 ml). After stirring at ambient temperature overnight, the ethanol was evaporated in vacuo, water was added to the residue and the aqueous solution extracted with methylene chloride. After drying the organic extracts over anhydrous magnesium sulphate, the methylene chloride was evaporated in vacuo. The residue was chromatographed on a silica gel column using 5% (v/v) diethyl ether-methylene chloride as eluant to give the title compound (2.1 g) as a viscous, colourless oil.

1. customthe ethanol was evaporated in vacuo, water
2. additionwas added to the residue
3. extractionthe aqueous solution extracted with methylene chloride
4. dry with materialAfter drying the organic extracts over anhydrous magnesium sulphate
5. customthe methylene chloride was evaporated in vacuo
6. customThe residue was chromatographed on a silica gel column