反应详情

177 mg of (S)-4-(2',5'-dimethoxy-3',4',6'-trimethylphenyl)-2-methyl-1-toluylsulphonyloxy-2-butanol are dissolved in 1 ml of ethanol and treated with 0.3 ml of alcoholic potassium hydroxide solution (1.5N). The mixture is left to stand at room temperature for 10 minutes, 30 ml of methylene chloride are then added and the mixture is dried over anhydrous sodium sulphate and concentrated. There are obtained 105 mg of (S)-4-(2',5'-dimethoxy-3',4',6'-trimethylphenyl)-2-methyl-1,2-epoxy-butane, m.p. 47°-48° C. [α]D20 +4.91° (c=2.2% in CHCl3).

1. waitThe mixture is left
2. dry with materialthe mixture is dried over anhydrous sodium sulphate
3. concentrationconcentrated