反应详情

26 g (0.159 mol) of 1-(4-chlorophenoxy)-2,2-dimethyl-butan-3-one were dissolved in 300 ml of chloroform and 25.5 g (0.159 mol) of bromine were added dropwise to the solution, at 20° C., at such a rate that decolorisation occurred continuously. After the end of the addition, the mixture was stirred for 30 minutes at room temperature and was then concentrated by distilling off the solvent in vacuo. 48.5 g of 1-bromo-4-(4-chlorophenoxy)-3,3-dimethylbutan-2-one of boiling point 150°-160° C./0.14 mm Hg were obtained (quantitative conversion). ##STR9##

1. additionAfter the end of the addition
2. concentrationwas then concentrated
3. distillationby distilling off the solvent in vacuo