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-pinanyl-peroxy-4-pentanone was recovered.
含有至少一个酮基和至少一个过氧基的化合物,每个过氧氧原子都连接到三级碳原子。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
过氧化氢加成到α,β-不饱和酮中制备的。举例说明:在77%的
硫酸存在下,将苯并羟过氧化物和
蒎烯羟过氧化物稍微过量地在0℃下反应;反应混合物在25℃下搅拌16小时。产物2-甲基-2-蒎基过氧基-4-戊酮被回收。