| 摘要 |
PURPOSE:To obtain the titled compound in high yield, by subjecting a mixed phase of oxidation product comprising dihydroperoxide prepared by oxidizing m-isopropyl-substituted isopropylbenzenes, etc. as a main component to a specific pH range, subjecting it to acidolysis. CONSTITUTION:A mixture of oxidation product substantially comprising dihydroperoxide or trihydroperoxide obtained by oxidizing m-isopropyl-substituted isopropylbenzene as a main component is reoxidized with H2O2 in the presence of an acidic catalyst, an alkali is added to the reaction mixture in such a way that the pH of an aqueous solution after neutralization, and separation into oil and water is made <=7 and <7, the catalyst residue is neutralized, the mixture of oxidation product is washed with an acid such as preferably sulfuric acid, phosphoric acid, etc., the mixture phase is adjusted to 3-6pH, and subjected to acidolysis at 20-120 deg.C under reflux, to give the desired compound. EFFECT:The titled compound can be prepared efficiently, an amount of acidic catalyst used can be reduced, and this process is industrially advantageous. |
