Compounds containing at least one keto group and at least one peroxy group, each peroxy oxygen being joined to a tertiary carbon atom. Examples: 2-Methyl-2-(t-butylperoxy)-4-pentanone. 2,6-Dimethyl-2,6-bis(t-butylperoxy)-4-heptanone. 3,5,5-Trimethyl-3-(t-butylperoxy)cyclohexanone. The compounds are prepared by the strong acid catalyzed addition of a tertiary hydroperoxide to an .alpha.,.beta.-unsaturated ketone. Illustration: Mesityl oxide and pinanyl hydroperoxide, in slight excess, were reacted at 0.degree. C. in the presence of 77% sulfuric acid; the reaction mix was stirred for 16 hours at 25.degree. C. Product 2-methyl-2-pinanylperoxy-4-pentanone was recovered.
含有至少一个酮基和至少一个过氧基的化合物,其中每个过氧氧原子连接到三级碳原子。例如:2-甲基-2-(叔丁基过氧基)-4-戊酮。2,6-二甲基-2,6-双(叔丁基过氧基)-
4-庚酮。3,5,5-三甲基-3-(叔丁基过氧基)
环己酮。这些化合物是通过强酸催化的三级过氧化物加到α,β-不饱和酮中制备的。例如:在77%的
硫酸存在下,将
二甲基亚砜和
蒎烷过氧化氢在0°C下稍微过量反应;反应混合物在25°C下搅拌16小时。得到2-甲基-2-蒎基过氧基-4-戊酮产物。