Compounds by addition of hydroperoxides to amp;agr;-amp;bgr;- unsaturated ketones

摘要

Compounds containing at least one keto group and at least one peroxy group, each peroxy oxygen being joined to a tertiary carbon atom. P PExamples: 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.PPThe compounds are prepared by the strong acid catalyzed addition of a tertiary hydroperoxide to an &agr;,&bgr;- unsaturated ketone. Illustration: Mesityl oxide and pinanyl hydroperoxide, in slight excess, were reacted at 0° C. in the presence of 77% sulfuric acid; the reaction mix was stirred for 16 hours at 25° C. Product 2-methyl-2-pinanylperoxy-4-pentanone was recovered.