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.
含有至少一个酮基团和至少一个过氧基团的化合物,每个过氧氧原子连接到一个三级碳原子。示例:2-甲基-2-(叔丁基过氧)-4-戊酮。2,6-二甲基-2,6-双(叔丁基过氧)-
4-庚酮。3,5,5-三甲基-3-(叔丁基过氧)
环己酮。这些化合物通过强酸催化的方法将三级
过氧化氢添加到α,β-不饱和酮中制备而成。举例:在0摄氏度下,将亚甲基环氧化合物和
蒎烯过氧化氢反应,加入77%的
硫酸;反应混合物在25摄氏度下搅拌16小时。产物2-甲基-2-蒎基过氧-4-戊酮被回收。