| Popis: |
Bromination of isophorone with excess of bromine in carbon tetrachloride at 0° gave 2,4,6-tribromo-3-bromomethyl-5, 5-dimethyl-2-cyclohexenone which on further treatment with bromine afforded 2,4,6, 6-tetrabromo-3-bromomethyl-5, 5-dimethyl-2-cyclohexenone. Bromination of isophorone and 4-bromoisophorone at 25° gave rasp. 2,6,6-tribromo- and 2,4,6-tribromo-3-dibromomethyl-5,5-dimethyl-2-cyclohexenone. The possible rearrangement in dimethylformamide and the catalytic hydrogenation of the bromo compounds were investigated. The reaction of isophorone oxide with hydrogen bromide did not give brominated products. |
